Updated on 2025/04/21

Information

 

写真a

 
UTSUNOMIYA SATOSHI
 
Organization
Faculty of Science Department of Chemistry Associate Professor
Central Institute of Radioisotope Science and Safety Management （Concurrent）
School of Sciences Department of Chemistry（Concurrent）
Graduate School of Sciences Department of Chemistry（Concurrent）
Title
Associate Professor
Contact information
メールアドレス
Tel
0928024168
Profile
表層環境に普遍的に存在するナノ粒子の特性評価。ナノ粒子を媒体とした有害元素・放射性核種の表層環境中移行挙動の解明。天然ナノ粒子と生体・微生物との相互作用の解明。
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Degree

  • Ph.D.

Research History

  • Department of Nuclear Engineering and Radiological Sciences, University of Michigan Department of Geological Sciences, University of Michigan   

Research Interests・Research Keywords

  • Research theme： Understanding environmental impacts of cesium-rich microparticles (CsMPs) released from Fukushima Daiichi Nuclear Power Plant and the properties of debris remaining inside the damaged reactors based on the micron-scale analysis of CsMPs.

    Keyword： Cesium, CsMPs

    Research period： 2015.6 - 2023.12

  • Research theme： Multiscale investigation of speciation of trace toxic metals on ultrafine particles in atmosphere

    Keyword： TEM, XANES, ultrafine particles

    Research period： 2009.1

  • Research theme： Mechanism of nanocrystallization of toxic metals and radionuclides by microbes.

    Keyword： microbioloty, radionuclides, nanocrystallization

    Research period： 2009.1

  • Research theme： Nanogeoscience. Migration and property of toxic metal nanoparticles on the Earth surfaces

    Keyword： Nanogeoscience, nanoparticle

    Research period： 2008.5 - 2011.5

Awards

  • Clair C. Patterson Award

    2024.8   Geochemical Society   高濃度放射性セシウム含有微粒子に関する先導的研究

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    Award type：International academic award (Japan or overseas) 

  • Geochemical Fellow

    2024.8   Geochemical Society and European Geochemical Association  

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    Award type：International academic award (Japan or overseas) 

  • 文部科学大臣表彰　科学技術賞　研究部門

    2025.4   文部科学省   高濃度放射性セシウム含有微粒子に関する先導的研究

  • MSA Fellow

    2013   Mineralogical Society of America  

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    Award type：International academic award (Japan or overseas) 

  • 日本原子力学会バックエンド部会優秀講演賞

    2024.3   日本原子力学会  

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • ポスター賞

    2005.9   International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere   Fate of the Epsilon Phase in the Oklo Natural Reactors

    S. Utsunomiya & R. C. Ewing

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    Award type：Award from international society, conference, symposium, etc. 

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Papers

  • Geochemistry of barium ions associated with biogenic manganese oxide nanoparticles generated by a fungus strain: Implications for radium sequestration in uranium mill tailings Invited Reviewed International journal

    Yokoo, Hiroki; Oki, Takumi; Uehara, Motoki; Winarni, Ilma Dwi; Yamaji, Keiko; Fukuyama, Kenjin; Ohara, Yoshiyuki; Ohnuki, Toshihiko; Hochella, Michael F.; Utsunomiya, Satoshi

    GONDWANA RESEARCH   110   270 - 282   2022.10   （ ISSN:1342-937X eISSN:1878-0571 ）

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Gondwana Research  

    Biogenic Mn oxides are reactive and ubiquitous in many Earth surface environments, yet their role in radionuclide sequestration at U mill-tailings sites still require an improved understanding at the nano- and molecular-scales. This study concerns the uptake of Ba, utilized as a safe and chemically appropriate surrogate for radioactive Ra, by biogenic Mn oxides produced by a fungal species, Coprinopsis urticicola, isolated from the mine water of the Ningyo-toge U mine, Okayama, Japan. The biogenic Mn oxides were identified as birnessite nanocrystals <10 nm in width having many vacancy sites in the MnO6 octahedral layers. Ba2+ adsorption experiments using biogenic birnessite were conducted at pH 6.00 ± 0.02 with the initial Ba concentrations ranging from 10–8 to 10–3 mol/L. The apparent distribution coefficient, Kd, was calculated to be 103.8 L/g for biogenic birnessite, which is comparable to the apparent Kd of Ra in the mill tailings pond at Ningyo-toge. Both in adsorption and coprecipitation experiments, extended X-ray absorption fine edge structure analysis of Ba L3 edge revealed that the Ba atom forms an inner-sphere complex with O atoms of the MnO6 layer. A slightly greater coordination number for coprecipitated Ba may be attributed to the formation of Ba[sbnd]O binding to the newly overlying MnO6 layer during coprecipitation. Static desorption experiments for 7 days reveal that the steady-state release rate of adsorbed Ba is ∼1.4 times faster than that of the coprecipitated Ba, when the Ba concentration in the initial loading solution was ∼10–8 mol/L, indicating that the release of intercalated (coprecipitation) Ba to solution is retarded. The present study demonstrates the importance of fungus-generated Mn oxides as an efficient absorber of Ba2+, and likely Ra2+, among soil compounds in U mill-tailings. This may be applicable to other contaminated sites due to the ubiquitous occurrence of fungi in the environment.

    DOI： 10.1016/j.gr.2021.09.020

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  • Novel Method of Quantifying Radioactive Cesium-Rich Microparticles (CsMPs) in the Environment from the Fukushima Daiichi Nuclear Power Plant Invited Reviewed International journal

    Ryohei Ikehara, Mizuki Suetake, Tatsuki Komiya, Genki Furuki, Asumi Ochiai, Shinya Yamaski, William R. Bower, Gareth T. W. Law, Toshihiko Ohnuki, Bernd Grambow, Rodney C. Ewing, and Satoshi Utsunomiya

    Environmental Science & Technology   52 ( (11) )   6390 - 6398   2018.5

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.est.7b06693

  • The competing effects of microbially derived polymeric and low molecular-weight substances on the dispersibility of CeO2 nanoparticles. Reviewed International journal

    Y. Nakano, A. Ochiai, K. Kawamoto, A.Takeda, K. Ichiyoshi, T. Ohnuki, M. F. Hochella, Jr., and S. Utsunomiya

    Scientific Reports   2018.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1038/s41598-018-21976-9

  • Uranium dioxides and debris fragments released to the environment with cesium-rich microparticles from the Fukushima Daiichi Nuclear Power Plant Reviewed International journal

    A. Ochiai, J. Imoto, M. Suetake, T. Komiya, G. Furuki, R. Ikehara, S. Yamasaki, G. Law, T. Ohnuki, B. Grambow, R. C. Ewing, and S. Utsunomiya

    Environmental Science & Technology   2018.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.est.7b06309

  • Isotopic signature and nano-texture of cesium-rich micro-particles: Release of uranium and fission products from the Fukushima Daiichi Nuclear Power Plant Reviewed International journal

    J. Imoto*, A. Ochiai*, G. Furuki, M. Suetake, R. Ikehara, K. Horie, M. Takehara, S. Yamasaki, K. Nanba, T. Ohnuki, G. T. W. Law, B. Grambow, R. C. Ewing, and S. Utsunomiya (*Two authors contributed equally)

    Scientific Reports   2017.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1038/s41598-017-05910-z

  • Cesium-rich micro-particles: A window into the meltdown events at the Fukushima Daiichi Nuclear Power Plant Reviewed International journal

    G. Furuki*, J. Imoto*, A. Ochiai, S. Yamasaki, K. Nanba, T. Ohnuki, B. Grambow, R. C. Ewing, & S. Utsunomiya (*Two authors contributed equally as the first author)

    Scientific Reports   2017.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1038/srep42731

  • Caesium fallout in Tokyo on 15th March, 2011 is dominated by highly radioactive, caesium-rich microparticles Reviewed International journal

    J. Imoto, G. Furuki, A. Ochiai, S. Yamasaki, K. Nanba, T. Ohnuki, B. Grambow, R. C. Ewing, & S. Utsunomiya

    Scientific Reports   7   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1038/srep42118

  • Iron oxidation state of a 2.45 b.y.-old paleosol developed on mafic volcanics Reviewed International journal

    S. Utsunomiya, T. Murakami, M. Nakada, & T. Kasama

    Geochimica et Cosmochimica Acta   67   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Uraninite and fullerene in atmospheric particulates Reviewed International journal

    S. Utsunomiya, K. A. Jensen, G. J. Keeler, & R. C. Ewing

    Environmental Science & Technology   36   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Application of high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM), STEM-energy dispersive X-ray spectrometry (EDX), and energy-filtered (EF)-TEM to the characterization of nanoparticles in the environment Reviewed International journal

    S. Utsunomiya & R. C. Ewing

    Environmental Science & Technology,   37   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Nano-scale mineralogy of Arsenic phases by HAADF-STEM Reviewed International journal

    S. Utsunomiya, S. C. Peters, J. D. Blum & R. C. Ewing

    American Mineralogist   88   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Direct identification of trace metals in fine and ultra-fine particles in the Detroit urban atmosphere. Reviewed International journal

    S. Utsunomiya, K. A. Jensen, G. J. Keeler, & R. C. Ewing

    Environmental Science & Technology   38   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Nanoscale occurrence of Pb in an Archean zircon Reviewed International journal

    S. Utsunomiya, C. S. Palenik, J. W. Valley, A. Cavosie, S. A. Wilde & R. C. Ewing,

    Geochimica et Cosmochimica Acta   68   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Colloid Transport of Plutonium in the Far-field of the Mayak Production Association, Russia Reviewed International journal

    A. P. Novikov, S. N. Kalmykov, S. Utsunomiya, R. C. Ewing, F. Horreard, S. B. Clark, V. V. Tkachev, & B. F. Myasoedov

    Science   314   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Radiation damage and alteration in zircon from Jack Hills granitoids, western Australia, Reviewed International journal

    S. Utsunomiya, R. C. Ewing, J. W. Valley, A. J. Cavosie, & S. A. Wilde

    Chemical Geology   236   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Groundwater Nanoparticles in the Far-Field at the　Nevada Test Site: Mechanism for Radionuclide Transport. Reviewed International journal

    S. Utsunomiya, A. B. Kersting, R. C. Ewing

    Environmental Science & Technology   43   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Biological nano-mineralization of Ce phosphate by Saccharomyces cerevisiae Reviewed International journal

    M. Jiang, T. Ohnuki, N. Kozai, K. Tanaka, Y. Suzuki, F. Sakamoto, E. Kamiishi, S. Utsunomiya,

    Chemical Geology   1900

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    Language：English  

  • Pb in zircon at the atomic-scale

    M. Kogawa, E.B. Watson, R.C. Ewing, & S. Utsunomiya

    American Mineralogist   97   1900

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    Language：English  

  • Post-adsorption process of Yb phosphate nano-particle formationby Saccharomyces cerevisiae

    M. Jiang, T. Ohnuki, K. Tanaka, N. Kozai, E. Kamiishi, & S. Utsunomiya

    GeochimicaetCosmochimicaActa   93   1900

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    Language：English  

  • Nano-scale reaction processes at the interface between apatite and aqueous lead International journal

    E. Kamiishi and S. Utsunomiya

    Chemical Geology   340   1900

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    Language：English  

  • Multi-scale analysis of the occurrence of Pb, Cr and Mn in the NIST standards: Urban dust (SRM1649a) and indoor dust (SRM2584)

    M.Jiang, Y.Nakamatsu, K.A. Jensen, S.Utsunomiya

    Atmospheric Environment   82   1900

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    Language：English  

  • Effects of CeO2 nanoparticles on microbial metabolism

    S.Masaki, H.Shiotsu, F.Sakamoto, T.Ohnuki, S.Utsunomiya

    Chemical Geology   391   1900

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  • Chiral pesticide permethrin promotes the antibiotic resistance genes dissemination by transformation: Different chiral isomers engage in distinct regulatory pathways

    Li, CX; Wang, LJ; Dai, Q; Chong, Y; Utsunomiya, S; Wang, HG; Zhang, Y; Han, J

    JOURNAL OF HAZARDOUS MATERIALS   488   137416   2025.5   （ ISSN:0304-3894 eISSN:1873-3336 ）

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    Language：English   Publisher：Journal of Hazardous Materials  

    The global dissemination of antibiotic resistance genes (ARGs) poses an increasingly urgent threat to both environmental and human health. The extensive use of chiral permethrin (PM), the most popular synthetic type I pyrethroid insecticide worldwide, has led to its increased detection in aquatic environments. However, our understanding of PM's role in spreading ARGs is still limited. Here, we systematically assessed the effects of two chiral isomers of 1R-cis-PM (CPM) and 1R-trans-PM (TPM) on the dissemination of ARGs in the aquatic environments by using a natural transformation (NT) model comprising plasmid pWH1274 and Acinetobacter baylyi ADP1. It was found that reactive oxygen species (ROS) was the main factor facilitating the NT of ARGs mediated by CPM and TPM, although their respective production mechanisms exhibited distinct pathways: CPM generates ROS primarily through the primary electron transport chain (ETC), whereas TPM does so via a secondary ETC. Furthermore, CPM enhanced NT by improving the bacterial competent state, while TPM promotes it by enhancing recombination. It was confirmed that both CPM and TPM have the potential to accelerate the spread of ARGs through distinct mechanisms. These findings will help us understand that different chiral isomers may pose risks through distinct mechanisms.

    DOI： 10.1016/j.jhazmat.2025.137416

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  • Acceptance for the 2024 C. C. Patterson Award to Satoshi Utsunomiya

    Utsunomiya, S

    GEOCHIMICA ET COSMOCHIMICA ACTA   388   318 - 318   2025.1   （ ISSN:0016-7037 eISSN:1872-9533 ）

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    Publisher：Geochimica et Cosmochimica Acta  

    DOI： 10.1016/j.gca.2024.10.034

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  • "Invisible" radioactive cesium atoms revealed: Pollucite inclusion in cesium-rich microparticles (CsMPs) from the Fukushima Daiichi Nuclear Power Plant

    Miyazaki, K; Takehara, M; Minomo, K; Horie, K; Takehara, M; Yamasaki, S; Saito, T; Ohnuki, T; Takano, M; Shiotsu, H; Iwata, H; Vettese, GF; Sarparanta, MP; Law, GTW; Grambow, B; Ewing, RC; Utsunomiya, S

    JOURNAL OF HAZARDOUS MATERIALS   470   134104   2024.5   （ ISSN:0304-3894 eISSN:1873-3336 ）

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    Language：English   Publisher：Journal of Hazardous Materials  

    Understanding radioactive Cs contamination has been a central issue at Fukushima Daiichi and other nuclear legacy sites; however, atomic-scale characterization of radioactive Cs in environmental samples has never been achieved. Here we report, for the first time, the direct imaging of radioactive Cs atoms using high-resolution high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). In Cs-rich microparticles collected from Japan, we document inclusions that contain 27 – 36 wt% of Cs (reported as Cs2O) in a zeolite: pollucite. The compositions of three pollucite inclusions are (Cs1.86K0.11Rb0.19Ba0.22)2.4(Fe0.85Zn0.84X0.31)2.0Si4.1O12, (Cs1.19K0.05Rb0.19Ba0.22)1.7(Fe0.66Zn0.32X0.41)1.4Si4.6O12, and (Cs1.27K0.21Rb0.29Ba0.15)1.9(Fe0.60Zn0.32X0.69)1.6Si4.4O12 (X includes other cations). HAADF-STEM imaging of pollucite, viewed along the [111] zone axis, revealed an array of Cs atoms, which is consistent with a simulated image using the multi-slice method. The occurrence of pollucite indicates that locally enriched Cs reacted with siliceous substances during the Fukushima meltdowns, presumably through volatilization and condensation. Beta radiation doses from the incorporated Cs are estimated to reach 106 – 107 Gy, which is more than three orders of magnitude less than typical amorphization dose of zeolite. The atomic-resolution imaging of radioactive Cs is an important advance for better understanding the fate of radioactive Cs inside and outside of nuclear reactors damaged by meltdown events.

    DOI： 10.1016/j.jhazmat.2024.134104

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  • Detecting radioactive particles in complex environmental samples using real-time autoradiography

    Ang, JWL; Bongrand, A; Duval, S; Donnard, J; Jolis, EM; Utsunomiya, S; Minomo, K; Koivula, R; Siitari-Kauppi, M; Law, GTW

    SCIENTIFIC REPORTS   14 ( 1 )   5413   2024.3   （ ISSN:2045-2322 ）

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    Language：English   Publisher：Scientific Reports  

    Radioactive particles often contain very high radioactivity concentrations and are widespread. They pose a potential risk to human health and the environment. Their detection, quantification, and characterization are crucial if we are to understand their impact. Here, we present the use of a real-time autoradiography gaseous detector (using parallel ionization multiplier) to expedite and improve the accuracy of radioactive particle screening in complex environmental samples. First, standard particles were used to assess the detector capabilities (spatial resolution, spectrometry, and artefact contributions), then, we applied the technique to more complex and environmentally relevant samples. The real-time autoradiography technique provides data with a spatial resolution (≲100 µm) suitable for particle analysis in complex samples. Further, it can differentiate between particles predominantly emitting alpha and beta radiation. Here, the technique is applied to radioactive cesium-rich microparticles collected from the Fukushima Daiichi nuclear exclusion zone, showing their accurate detection, and demonstrating the viability of real-time autoradiography in environmental scenarios. Indeed, for more complex samples (radioactive particles in a less radioactive heterogeneous background mix of minerals), the technique permits relatively high selectivity for radioactive particle screening (up to 61.2% success rate) with low false positive percentages (~ 1%).

    DOI： 10.1038/s41598-024-52876-w

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  • Unveiling Fukushima Daiichi Meltdowns Through Cesium-Rich Microparticles

    SATOSHI UTSUNOMIYA

    Abstracts of Annual Meeting of the Geochemical Society of Japan   71 ( 0 )   19   2024

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    Language：Japanese   Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    <p>The nuclear disaster at the Fukushima Daiichi Nuclear Power Plant (FDNPP) in March 2011 resulted in partial meltdowns of three reactors. During the meltdowns, a type of condensed particle, a cesium-rich micro-particle (CsMP), formed inside the reactors through unknown processes. This presentation provides an overview of a series of articles that encompass the elucidation of meltdown processes, including the evolution of debris. CsMPs are associated with various nanoparticles derived from irradiated fuel assembly and structural materials, including U dioxide and U-Zr oxide eutectic nanoparticles, Pu, and B isotopes. The studies conducted in the last decade showcase that, despite their small size, radioactive microparticles released during severe accidents can be a crucial source of information when state-of-the-art analytical techniques are applied.</p>

    DOI： 10.14862/geochemproc.71.0_19

    CiNii Research

  • Occurrence of radioactive cesium-rich micro-particles (CsMPs) in a school building located 2.8 km south-west of the Fukushima Daiichi Nuclear Power Plant. Reviewed International journal

    K. Fueda, T. Komiya, K. Minomo, K. Horie, M. Takehara, S. Yamasaki, H. Shiotsu, T. Ohnuki, B. Grambow, G. T. W. Law, R. C. Ewing, & S. Utsunomiya

    Chemosphere   328   138556   2023.7   （ ISSN:0045-6535 eISSN:1879-1298 ）

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Chemosphere  

    Radioactive Cs-rich microparticles (CsMPs) released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) are a potential health risk through inhalation. Little has been documented on the occurrence of CsMPs, particularly their occurrence inside buildings. In this study, we quantitatively analyze the distribution and number of CsMPs in indoor dust samples collected from an elementary school located 2.8 km to the southwest of FDNPP. The school had remained deserted until 2016. Then, using a modified version of the autoradiography-based “quantifying CsMPs (mQCP) method,” we collected samples and determined the number of CsMPs and Cs radioactive fraction (RF) values of the microparticles (defined as total Cs activity from CsMPs/bulk Cs activity of the entire sample). The numbers of CsMPs ranged from 653 to 2570 particles/(g dust) and 296–1273 particles/(g dust) on the first and second floors of the school, respectively. The corresponding RFs ranged between 6.85 – 38.9% and 4.48–6.61%, respectively. The number of CsMPs and RF values in additional outdoor samples collected near the school building were 23–63 particles/(g dust or soil) and 1.14–1.61%, respectively. The CsMPs were most abundant on the school's first floor near to the entrance, and the relative abundance was higher near the stairs on the second floor, indicating a likely CsMP dispersion path through the building. Additional wetting of the indoor samples combined with autoradiography revealed that indoor dusts had a distinct absence of intrinsic, soluble Cs species, such as CsOH. These combined observations indicate that a significant amount of poorly soluble CsMPs were likely contained in initial radioactive airmass plumes from the FDNPP and that the microparticles penetrated buildings. CsMPs could still be abundant at the location, with locally high Cs activity in indoor environments near to openings.

    DOI： 10.1016/j.chemosphere.2023.138566

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  • Improved radio-cesium detection using quantitative real-time autoradiography Reviewed International journal

    J. W. L. Ang, A. Bongrand, S. Duval, J. Donnard, J. Parkkonen, S. Utsunomiya, R. Koivula, M. Siitari-Kauppi & G. T. W. Law

    ACS Omega   8 ( 25 )   22523 - 22535   2023.5   （ ISSN:2470-1343 ）

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：ACS Omega  

    Cesium-134 and -137 are prevalent, long-lived, radio-toxic contaminants released into the environment during nuclear accidents. Large quantities of insoluble, respirable Cs-bearing microparticles (CsMPs) were released into the environment during the Fukushima Daiichi nuclear accident. Monitoring for CsMPs in environmental samples is essential to understand the impact of nuclear accidents. The current detection method used to screen for CsMPs (phosphor screen autoradiography) is slow and inefficient. We propose an improved method: real-time autoradiography that uses parallel ionization multiplier gaseous detectors. This technique permits spatially resolved measurement of radioactivity while providing spectrometric data from spatially heterogeneous samples─a potential step-change technique for use after nuclear accidents for forensic analysis. With our detector configuration, the minimum detectable activities are sufficiently low for detecting CsMPs. Further, for environmental samples, sample thickness does not detrimentally affect detector signal quality. The detector can measure and resolve individual radioactive particles ≥465 μm apart. Real-time autoradiography is a promising tool for radioactive particle detection.

    DOI： 10.1021/acsomega.3c00728

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  • Chemical species of cesium and iodine in condensed vaporized microparticles formed by melting nuclear fuel components with concrete materials. Reviewed International journal

    T. Ohnuki, J. Ye, T. Kato, J. Liu, M. Takano, N. Kozai, & S. Utsunomiya

    Environmental Science: Processes & Impacts   25 ( 7 )   1204 - 1212   2023.5   （ ISSN:2050-7887 eISSN:2050-7895 ）

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Environmental Science: Processes and Impacts  

    In this study, we report chemical species of Cs and I in condensed vaporized particles (CVPs) produced by melting experiments using nuclear fuel components containing CsI with concrete. Analyses of CVPs by SEM with EDX showed the formation of many round particles containing Cs and I of diameters less than ∼20 μm. X-ray absorption near-edge-structure and SEM-EDX analyses showed two kinds of particles: one containing large amounts of Cs and I, suggesting the presence of CsI, and the other containing small amounts of Cs and I with large Si content. When CVSs were placed in contact with deionized water, most of the CsI from both particles was dissolved. In contrast, some fractions of Cs remained from the latter particles and possessed different chemical species from CsI. In addition, the remaining Cs was concomitantly present with Si, resembling chemical components in the highly radioactive cesium-rich microparticles (CsMPs) released by nuclear plant accidents into the surrounding environments. These results strongly suggest that Cs was incorporated in CVSs along with Si by melting nuclear fuel components to form sparingly-soluble CVMPs.

    DOI： 10.1039/D3EM00074E

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  • Direct observation of Mn distribution/speciation within and surrounding a basidiomycete fungus in the production of Mn-oxides important in toxic element containment Reviewed International journal

    Takeda, Ayaka; Oki, Takumi; Yokoo, Hiroki; Kawamoto, Keisuke; Nakano, Yuriko; Ochiai, Asumi; Winarni, Ilma Dwi; Kitahara, Mitsuki; Miyoshi, Kenta; Fukuyama, Kenjin; Ohara, Yoshiyuki; Yamaji, Keiko; Ohnuki, Toshihiko; Hochella, Michael F.; Utsunomiya, Satoshi

    CHEMOSPHERE   313   137526   2023.2   （ ISSN:0045-6535 eISSN:1879-1298 ）

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Chemosphere  

    Biogenic manganese (Mn) oxides occur ubiquitously in the environment including the uranium (U) mill tailings at the Ningyo-toge U mine in Okayama, Japan, being important in the sequestration of radioactive radium. To understand the nanoscale processes in Mn oxides formation at the U mill tailings site, Mn2+ absorption by a basidiomycete fungus, Coprinopsis urticicola, isolated from Ningyo-toge mine water samples, was investigated in the laboratory under controlled conditions utilizing electron microscopy, synchrotron-based X-ray analysis, and fluorescence microscopy with a molecular pH probe. The fungus’ growth was first investigated in an agar-solidified medium supplemented with 1.0 mmol/L Mn2+, and Cu2+ (0–200 μM), Zn2+ (0–200 μM), or diphenyleneiodonium (DPI) chloride (0–100 μM) at 25 °C. The results revealed that Zn2+ has no significant effects on Mn oxide formation, whereas Cu2+ and DPI significantly inhibit both fungal growth and Mn oxidation, indicating superoxide-mediated Mn oxidation. Indeed, nitroblue tetrazolium and diaminobenzidine assays on the growing fungus revealed the production of superoxide and peroxide. During the interaction of Mn2+ with the fungus in solution medium at the initial pH of 5.67, a small fraction of Mn2+ infiltrated the fungal hyphae within 8 h, forming a few tens of nm-sized concentrates of soluble Mn2+ in the intracellular pH of ∼6.5. After 1 day of incubation, Mn oxides began to precipitate on the hyphae, which were characterized as fibrous nanocrystals with a hexagonal birnessite-structure, these forming spherical aggregates with a diameter of ∼1.5 μm. These nanoscale processes associated with the fungal species derived from the Ningyo-toge mine area provide additional insights into the existing mechanisms of Mn oxidation by filamentous fungi at other U mill tailings sites under circumneutral pH conditions. Such processes add to the class of reactions important to the sequestration of toxic elements.

    DOI： 10.1016/j.chemosphere.2022.137526

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  • Gravitational separation of Cs-137 contaminated soil in Fukushima environment: Density dependence of Cs-137 activity and application to volume reduction Invited Reviewed International journal

    Yamasaki, Shinya; Saito, Hikaru; Nakamura, Tsukasa; Morooka, Kazuya; Sueki, Keisuke; Utsunomiya, Satoshi

    JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   246   106846   2022.5   （ ISSN:0265-931X eISSN:1879-1700 ）

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Journal of Environmental Radioactivity  

    Behavior of radiocesium in Fukushima after its deposition is mainly controlled by mobility of soil components, of which the density is one of the parameters governing the mobility; however, little information is available on the density of soil components associated with radiocesium in environment. Furthermore, the reduction of the volume of radiocesium-contaminated soil in the interim storage is highly demanded. In this study, we developed a gravitational separation method using a sodium polytungstate (SPT) solution combined with size fractionation to understand the relation between 137Cs activity and the density of surface soil components and evaluate the feasibility of the method for the volume reduction of the contaminated soil. In all soil samples examined, 137Cs concentration of the small size (<0.063 mm) and high-density (2.4–2.8 g cm−3) fraction was the highest among the separated fractions, whereas most of the radiocesium-rich micro-particles were distributed in the small size (<0.063 mm) and low density (<2.4 g cm−3) fraction. Although ultrasonication improved the size separation efficiency, a single-step gravitational separation method using an SPT solution with a density of 2.4 g cm−3 without size separation and ultrasonication revealed that the 137Cs concentration on 50°C-dry weight basis in the dense (>2.4 g cm−3) fraction was 25.6–82.7% lower than that of the bulk sample for all soil samples. In particular, for the samples with a bulk 137Cs concentration of 29.6 Bq g−1 50°C-dry weight, the 137Cs concentration in the fraction was below the safety treatment requirement (i.e., 8 Bq g−1). Therefore, single-step gravitational separation may be used for the volume reduction of contaminated soils.

    DOI： 10.1016/j.jenvrad.2022.106846

    Web of Science

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    PubMed

  • A review of efforts for volume reduction of contaminated soil in the ten years after the accident at the Fukushima Daiichi Nuclear Power Plant Reviewed International journal

    Yamasaki, Shinya; Utsunomiya, Satoshi

    Journal of Nuclear Science and Technology   2022.5

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Chemical species of iodine during sorption by activated carbon -Effects of original chemical species and fulvic acids Reviewed International journal

    Kato, Tomoaki; Kozai, Naofumi; Tanaka, Kazuya; Kaplan, Daniel, I; Utsunomiya, Satoshi; Ohnuki, Toshihiko

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   59 ( 5 )   580 - 589   2022.5   （ ISSN:0022-3131 eISSN:1881-1248 ）

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Journal of Nuclear Science and Technology  

    Radioactive iodine is one of the mobile radionuclides contained in the contaminated water generated by cooling of the fuel debris at Fukushima Daiichi nuclear power plant (FDNPP). It is reported that chemical species of iodine transform between iodate, iodide, and organo-I in the environments. In FDNPP, the contaminated water is merged with ground water containing fulvic acids and then passed through a series of treatment columns to remove radionuclides. The objective of this study was to determine if iodide or iodate speciation changed after it was sorbed by activated carbon (AC), a potential adsorbent at the FDNPP for waste water treatment. Chemical species of the sorbed iodine was determined by X-ray absorption near edge spectroscopy (XANES) at the SPring-8 Synchrotron Radiation Facility. Sorption experiments of iodate and iodide showed systematic decreases of the distribution coefficients with increasing pH of the solution. Additionally, greater sorption of iodate than iodide was measured. The novelty of these results includes that the chemical species of iodate and iodide on the AC did not change during sorption; however, the presence of fulvic acids promoted the transformation of iodate to the less strongly bound species, iodide, during sorption to AC. The results from this study have important implications on the long-term effectiveness and eventual disposal of used AC from the FDNPP facility.

    DOI： 10.1080/00223131.2021.1993370

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  • Volatilization of B<sub>4</sub>C control rods in Fukushima Daiichi nuclear reactors during meltdown: B-Li isotopic signatures in cesium-rich microparticles

    Fueda, K; Takami, R; Minomo, K; Morooka, K; Horie, K; Takehara, M; Yamasaki, S; Saito, T; Shiotsu, H; Ohnuki, T; Law, GTW; Grambow, B; Ewing, RC; Utsunomiya, S

    JOURNAL OF HAZARDOUS MATERIALS   428   128214   2022.4   （ ISSN:0304-3894 eISSN:1873-3336 ）

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    Language：English   Publisher：Journal of Hazardous Materials  

    Boron carbide control rods remain in the fuel debris of the damaged reactors in the Fukushima Daiichi Nuclear Power Plant, potentially preventing re-criticality; however, the state and stability of the control rods remain unknown. Sensitive high-resolution ion microprobe analyses have revealed B–Li isotopic signatures in radioactive Cs-rich microparticles (CsMPs) that formed by volatilization and condensation of Si-oxides during the meltdowns. The CsMPs contain 1518–6733 mg kg–1 of 10+11B and 11.99–1213 mg kg–1 of 7Li. The 11B/10B (4.15–4.21) and 7Li/6Li (213−406) isotopic ratios are greater than natural abundances (~4.05 and ~12.5, respectively), indicating that 10B(n,α)7Li reactions occurred in B4C prior to the meltdowns. The total amount of B released with CsMPs was estimated to be 0.024–62 g, suggesting that essentially all B remains in reactor Units 2 and/or 3 and is enough to prevent re-criticality; however, the heterogeneous distribution of B needs to be considered during decommissioning.

    DOI： 10.1016/j.jhazmat.2022.128214

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  • Ten years after the NPP accident at Fukushima : review on fuel debris behavior in contact with water Reviewed International journal

    Grambow, Bernd; Nitta, Ayako; Shibata, Atsuhiro; Koma, Yoshikazu; Utsunomiya, Satoshi; Takami, Ryu; Fueda, Kazuki; Ohnuki, Toshihiko; Jegou, Christophe; Laffolley, Hugo; Journeau, Christophe

    Journal of Nuclear Science and Technology   2022.4

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

  • A review of efforts for volume reduction of contaminated soil in the ten years after the accident at the Fukushima Daiichi Nuclear Power Plant

    Yamasaki, S; Utsunomiya, S

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   59 ( 2 )   135 - 147   2022.2   （ ISSN:0022-3131 eISSN:1881-1248 ）

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    Publisher：Journal of Nuclear Science and Technology  

    The accident at the Fukushima Daiichi Nuclear Power Plant in 2011 released many radioactive elements into the environment, contaminating a large amount of soil. Currently, 14 million m3 of contaminated soil is scheduled for interim storage, and the final disposal of the soil is planned by 2045. In the future, the decommissioning of the plant will generate a great amount of radioactive waste. Therefore, reduction of the volume of contaminated soil, which accounts for ~90% of the wastes, is a problem that needs to be addressed in parallel with the decommissioning of the plant. Since most of the radionuclides have decayed in the decade since the accident, radioactive Cs (especially 137Cs) is one element that needs to be removed from the wastes. This review summarizes the progress of volume reduction technology for soil contaminated with radioactive Cs and an understanding of the existence of radioactive Cs in the soil.

    DOI： 10.1080/00223131.2021.1974596

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  • Ten years after the NPP accident at Fukushima : review on fuel debris behavior in contact with water

    Grambow, B; Nitta, A; Shibata, A; Koma, Y; Utsunomiya, S; Takami, R; Fueda, K; Ohnuki, T; Jegou, C; Laffolley, H; Journeau, C

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   59 ( 1 )   1 - 24   2022.1   （ ISSN:0022-3131 eISSN:1881-1248 ）

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    Publisher：Journal of Nuclear Science and Technology  

    Following the NPP accident, several hundred tons of heat-generating corium and fuel debris have been cooled permanently by millions of m3 of flowing. Knowledge on the interaction with water is crucial for any decommissioning planning. Starting from knowledge on the evolutions of the accident in the three reactor cores and associated fuel debris formations and some additional isotopic and physio-chemical information on debris fragments collected in Fukushima soils, we review the temporal evolution of the chemistry and leached radionuclide contents of the cooling water, comparing measured concentration ratios of the actinides and fission products in the water to reported results of laboratory leaching studies with either spent nuclear fuel or simulated fuel debris. As for spent fuel leaching, the fractions of inventories of 134,137Cs in the cooling water are orders of magnitude larger than that of the actinides. After more than 10 years of fuel debris/water contact, 137Cs release rates have decreased by about a factor of 100. The total release of actinides from the fuel debris is orders of magnitude lower than that of 134,137Cs or of 90Sr. This high stability makes direct disposal of fuel debris in suitable containers after decommissioning a viable option.

    DOI： 10.1080/00223131.2021.1966347

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  • Newhighly radioactive particles derived fromFukushima Daiichi Reactor Unit 1: Properties and environmental impacts Invited Reviewed International journal

    Morooka, Kazuya; Kurihara, Eitaro; Takehara, Masato; Takami, Ryu; Fueda, Kazuki; Horie, Kenji; Takehara, Mami; Yamasaki, Shinya; Ohnuki, Toshihiko; Grambow, Bernd; Law, Gareth T. W.; Ang, Joyce W. L.; Bower, William R.; Parker, Julia; Ewing, Rodney C.; Utsunomiya, Satoshi

    SCIENCE OF THE TOTAL ENVIRONMENT   773   2021.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.scitotenv.2021.145639

  • The role of nanoscale aggregation of ferrihydrite and amorphous silica in the natural attenuation of contaminant metals at mill tailings sites Invited Reviewed International journal

    Kawamoto, Keisuke; Yokoo, Hiroki; Ochiai, Asumi; Nakano, Yuriko; Takeda, Ayaka; Oki, Takumi; Takehara, Masato; Uehara, Motoki; Fukuyama, Kenjin; Ohara, Yoshiyuki; Ohnuki, Toshihiko; Hochella, Michael F., Jr.; Utsunomiya, Satoshi

    GEOCHIMICA ET COSMOCHIMICA ACTA   298   207 - 226   2021.4

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.gca.2021.02.004

  • Solubility of monoclinic and yttrium stabilized cubic ZrO2: Solution and surface thermodynamics guiding ultra-trace analytics in aqueous phase Invited Reviewed International journal

    Zouari, W.; Suzuki-Muresan, T.; Kobayashi, T.; Utsunomiya, S.; Abdelouas, A.; Grambow, B.

    JOURNAL OF NUCLEAR MATERIALS   545   2021.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jnucmat.2020.152631

  • Occurrence of highly radioactive microparticles in the seafloor sediment from the pacific coast 35 km northeast of the Fukushima Daiichi nuclear power plant Invited Reviewed International journal

    Ikenoue, Takahito; Takehara, Masato; Morooka, Kazuya; Kurihara, Eitaro; Takami, Ryu; Ishii, Nobuyoshi; Kudo, Natsumi; Utsunomiya, Satoshi

    CHEMOSPHERE   267   2021.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2020.128907

  • Desorption mechanisms of cesium from illite and vermiculite Invited Reviewed International journal

    Murota, Kento; Tanoi, Keitaro; Ochiai, Asumi; Utsunomiya, Satoshi; Saito, Takumi

    APPLIED GEOCHEMISTRY   123   2020.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apgeochem.2020.104768

  • Particulate plutonium released from the Fukushima Daiichi meltdowns Invited Reviewed International journal

    Kurihara, Eitaro; Takehara, Masato; Suetake, Mizuki; Ikehara, Ryohei; Komiya, Tatsuki; Morooka, Kazuya; Takami, Ryu; Yamasaki, Shinya; Ohnuki, Toshihiko; Horie, Kenji; Takehara, Mami; Law, Gareth T. W.; Bower, William; Mosselmans, J. Frederick W.; Warnicke, Peter; Grambow, Bernd; Ewing, Rodney C.; Utsunomiya, Satoshi

    SCIENCE OF THE TOTAL ENVIRONMENT   743   2020.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.scitotenv.2020.140539

  • Organic complexation of U(VI) in reducing soils at a natural analogue site: Implications for uranium transport Invited Reviewed International journal

    Fuller, Adam J.; Leary, Peter; Gray, Neil D.; Davies, Helena S.; Mosselmans, J. Frederick W.; Cox, Filipa; Robinson, Clare H.; Pittman, Jon K.; McCann, Clare M.; Muir, Michael; Graham, Margaret C.; Utsunomiya, Satoshi; Bower, William R.; Morris, Katherine; Shaw, Samuel; Bots, Pieter; Livens, Francis R.; Law, Gareth T. W.

    CHEMOSPHERE   254   2020.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2020.126859

  • Abundance and distribution of radioactive cesium-rich microparticles released from the Fukushima Daiichi Nuclear Power Plant into the environment Invited Reviewed International journal

    Ikehara, Ryohei; Morooka, Kazuya; Suetake, Mizuki; Komiya, Tatsuki; Kurihara, Eitaro; Takehara, Masato; Takami, Ryu; Kino, Chiaki; Horie, Kenji; Takehara, Mami; Yamasaki, Shinya; Ohnuki, Toshihiko; Law, Gareth T. W.; Bower, William; Grambow, Bernd; Ewing, Rodney C.; Utsunomiya, Satoshi

    CHEMOSPHERE   241   2020.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2019.125019

  • Nano-scaled Calcium Molybdate Particle Formation on Egg Phosphatidylcholine Liposome Surface Invited Reviewed International journal

    Yamasaki, Shinya; Kurita, Saori; Ochiai, Asumi; Sueki, Keisuke; Utsunomiya, Satoshi

    CHEMISTRY LETTERS   48 ( 12 )   1480 - 1483   2019.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1246/cl.190651

  • Nano-scaled Calcium Molybdate Particle Formation on Egg Phosphatidylcholine Liposome Surface Invited Reviewed International journal

    Yamasaki, Shinya; Kurita, Saori; Ochiai, Asumi; Sueki, Keisuke; Utsunomiya, Satoshi

    CHEMISTRY LETTERS   48 ( 12 )   1480 - 1483   2019.12

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1246/cl.190651

  • Editorial for Special Issue "Minerals Down to the Nanoscale: A Glimpse at Ore-Forming Processes" Invited Reviewed International journal

    Ciobanu, Cristiana L.; Utsunomiya, Satoshi; Reich, Martin; Plumper, Oliver; Cook, Nigel J.

    MINERALS   9 ( 11 )   2019.11

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/min9110692

  • Dissolution of radioactive, cesium-rich microparticles released from the Fukushima Daiichi Nuclear Power Plant in simulated lung fluid, pure-water, and seawater Invited Reviewed International journal

    Suetake, Mizuki; Nakano, Yuriko; Furuki, Genki; Ikehara, Ryohei; Komiya, Tatsuki; Kurihara, Eitaro; Morooka, Kazuya; Yamasaki, Shinya; Ohnuki, Toshihiko; Horie, Kenji; Takehara, Mami; Law, Gareth T. W.; Bower, William; Grambow, Bernd; Ewing, Rodney C.; Utsunomiya, Satoshi

    CHEMOSPHERE   233   633 - 644   2019.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2019.05.248

  • Formation of radioactive cesium microparticles originating from the Fukushima Daiichi Nuclear Power Plant accident: characteristics and perspectives Invited Reviewed International journal

    Ohnuki, Toshihiko; Satou, Yukihiko; Utsunomiya, Satoshi

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   56 ( 9-10 )   790 - 800   2019.10

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/00223131.2019.1595767

  • Metaschoepite Dissolution in Sediment Column Systems-Implications for Uranium Speciation and Transport Invited Reviewed International journal

    Bower, William R.; Morris, Katherine; Livens, Francis R.; Mosselmans, J. Frederick W.; Fallon, Connaugh M.; Fuller, Adam J.; Natrajan, Louise; Boothman, Christopher; Lloyd, Jonathan R.; Utsunomiya, Satoshi; Grolimund, Daniel; Sanchez, Dario Ferreira; Jilbert, Tom; Parker, Julia; Neill, Thomas S.; Law, Gareth T. W.

    ENVIRONMENTAL SCIENCE & TECHNOLOGY   53 ( 16 )   9915 - 9925   2019.8

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    Language：Japanese   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.est.9b02292

  • Calcium molybdate nanoparticles formation in egg phosphatidyl choline based liposome caused by liposome fusion Reviewed

    Shinya Yamasaki, Saori Kurita, Asumi Ochiai, Miya Hashimoto, Keisuke Sueki, Satoshi Utsunomiya

    Journal of Colloid And Interface Science   530   473 - 480   2018.11

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    In order to achieve the highly efficient
    99m
    Tc production from
    100
    MoO
    3
    by the
    100
    Mo(n, 2n)
    99
    Mo reaction, we have developed a new protocol to synthesize nano-sized Mo particles, of which the size was controlled by the inner space of the liposomes. Calcium and molybdate ions were encapsulated into ∼100 nm size liposomes. The liposome suspensions were then mixed and heated to promote the membrane fusion. As a result, the insoluble CaMoO
    4
    nanoparticles precipitated inside the liposomes. The median particle diameter of 168 nm and average diameter of 169 ± 56 nm (n = 109) were obtained from an SEM image, and the particles have a powellite-structure. The formation process of the particles was then examined. The formation of nano-sized CaMoO
    4
    was observed by the high resolution TEM image and TEM image of negative-stained liposome. At the room temperature, the fusion of liposome did not occur significantly. These results suggest that nanocrystals of the CaMoO
    4
    were likely formed in the liposomes because of the liposome fusion and aggregated during the drying processes of reaction solution.

    DOI： 10.1016/j.jcis.2018.07.007

  • Biomineralization of middle rare earth element samarium in yeast and bacteria systems Reviewed International journal

    M. Jiang, T. Ohnuki, S. Utsunomiya

    Geomicrobiology Journal   2018.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/01490451.2017.1377320

  • Effective and efficient desorption of Cs from hydrothermal-treated clay minerals for the decontamination of Fukushima radioactive soil Reviewed International journal

    X. Yin, N. Horiuchi, S. Utsunomiya, A. Ochiai, H. Takahashi, Y. Inaba, X. Wang, T. Ohnuki, and K. Takeshita

    Chemical Engineering Journal   2018.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.cej.2017.09.199

  • Removal of soluble strontium into biogenic carbonate minerals from a highly saline solution using halophilic bacterium, Bacillus sp Reviewed International journal

    T. Horiike, Y. Dotsuta, Y. Nakano, A. Ochiai, S. Utsunomiya, T. Ohnuki, and M. Yamashita

    Applied and Environmental Microbiology   2017.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1128/AEM.00855-17

  • Adsorption of extracellular polymeric substances derived from S. cerevisiae to ceria nanoparticles and the effects on the colloidal stability Reviewed International journal

    S. Masaki*, Y. Nakano*, K. Ichiyoshi, K. Kawamoto, A. Takeda, T. Ohnuki, M. F. Hochella, Jr., S. Utsunomiya (*Two authors contributed equally)

    Environments   2017.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/environments4030048

  • Effect of temperature on K+ and Mg2+ extracted desorption of Cs from vermiculitized biotite Reviewed International journal

    X. B. Yin, L. Zhang, A. Ochiai, S. Utsunomiya, H. Takahashi, T. Ohnuki, K. Takeshita

    Chemistry Letters   2017.6

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    DOI： 10.1246/cl.170551

  • Crystal Chemistry and Stability of Hydrated Rare-Earth Phosphates Formed at Room Temperature Reviewed International journal

    A. Ochiai & S. Utsunomiya

    Minerals   2017.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/min7050084

  • Sorption behavior of Np(V) on microbe pure culture and consortia Reviewed International journal

    T. Ohnuki, N. Kozai, F. Sakamoto, S. Utsunomiya, & K. Kato

    Chemistry Letters   2017.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1246/cl.170068

  • Radioactive Cs in the estuary sediments near Fukushima Daiichi Nuclear Power Plant Invited Reviewed International journal

    S. Yamasaki, J. Imoto, G. Furuki, A. Ochiai, T. Ohnuki, K. Sueki, K. Nanba, R. C. Ewing, S. Utsunomiya

    Science of the Total Environment   551-552   155-162   2016.9

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  • Structure of a gold(III) hydroxide and determination of its solubility Reviewed International journal

    D. Kawamoto, H. Ando, H. Ohashi, Y. Kobayashi, T. Honma, T. Ishida, M. Tokunaga, Y. Okaue, S. Utsunomiya, & T. Yokoyama.

    Bulletin of the Chemical Society of Japan   89   1385 - 1390   2016.2

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  • Radioactive Cs in the severely contaminated soils near the Fukushima Daiichi nuclear power plant

    M. Kaneko, H. Iwata, H. Shiotsu, S. Masaki, Y. Kawamoto, S. Yamasaki, Y. Nakamatsu, J.Imoto, G.Furuki, A.Ochiai, K. Nanba, T. Ohnuki, R. C. Ewing, S.Utsunomiya

    Frontiers in Energy   1900

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    DOI： 10.3389/fenrg.2015.00037

  • The effect of partial pressure of carbon dioxide on anorthite dissolution Reviewed International journal

    S. Utsunomiya, T. Murakami, K. Tsukimura, & H. Kadohara

    Mineralogical Journal   21   1900

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  • Direct evidence of Late Archean to Early Proterozoic anoxic atmosphere from a product of 2.5 Ga old weathering Reviewed International journal

    T. Murakami, S. Utsunomiya, Y. Imazu, & N. Prasad

    Earth and Planetary Science Letters   184   1900

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  • Seafloor hydrothermal alteration at an Archean mid-ocean ridge Reviewed International journal

    K. Kitajima, S. Maruyama, S. Utsunomiya & J. G. Liou

    Journal of Metamorphic Geology   17   1900

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  • Ion irradiation-induced amorphization and nanocrystal formation in garnets Reviewed International journal

    S. Utsunomiya, L.M. Wang, S. Yudintsev, & R.C. Ewing

    Journal of Nuclear Materials   303   1900

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  • Cesium and Strontium Incorporation into Uranophane, [Ca(UO2)(SiO3OH)]2×5H2O] Reviewed International journal

    M. Douglas, S. B. Clark, S. Utsunomiya, & R. C. Ewing

    Journal of Nuclear Science and Technology   3   1900

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  • Ion irradiation effects in natural garnets: Comparison with zircon Reviewed International journal

    S. Utsunomiya, L. M. Wang & R. C. Ewing

    Nuclear Instruments and Methods B   191   1900

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  • The effect of ionizing radiation on uranophane Reviewed International journal

    S. Utsunomiya, L. M. Wang, M. Douglas, S. Clark, & R. C. Ewing

    American Mineralogist   88   1900

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  • Biotite dissolution process and mechanism in the laboratory and in nature: Early stage weathering environment and vermiculitization Reviewed International journal

    T. Murakami, S. Utsunomiya, T. Yokoyama, & T. Kasama

    American Mineralogist   88   1900

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  • Oxygen isotopic composition of nano-scale uraninite at the Oklo-Okélobondo natural fission reactors, Gabon Reviewed International journal

    M. Fayek, S. Utsunomiya, R. C. Ewing, L. R. Riciputi, & K. A. Jensen

    American Mineralogis   88   1900

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  • Ion-beam and electron-beam irradiation of synthetic britholite Reviewed International journal

    S. Utsunomiya, L. M. Wang, S. Yudintsev, & R. C. Ewing

    Journal of Nuclear Materials   322   1900

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  • Neptunium association with uranium (VI) silicate solid phases Reviewed International journal

    M. Douglas, S. B. Clark, J. I. Friese, B. W. Arey, E. C. Buck, B. D. Hanson, S. Utsunomiya, & R. C. Ewing

    Radiochimica Acta   93   1900

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  • “Invisible” gold revealed: Direct imaging of gold nanoparticles in a Carlin-type deposit. Reviewed International journal

    C. S. Palenik, S. Utsunomiya, M. Reich, S. E. Kesler, & R. C. Ewing

    American Mineralogist   89   1900

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  • Influence of radioactive decay on properties of confinement matrices of actinide-containing waste Reviewed International journal

    N. P. Laverov, S. V. Yudintsev, T. S. Ioudintseva, S. V. Stefanovsky, R. C. Ewing, J. Lian, S. Utsunomiya, L. M. Wang

    Geology of Ore Deposits   45   1900

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  • Biotite dissolution under an anoxic condition: Implication for Fe behavior during Archean weathering Reviewed International journal

    T. Murakami, J. Ito, S. Utsunomiya, & T. Kasama

    Earth and Planetary Science Letters   224   1900

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  • Effect of radiation on properties of confinement matrices for immobilization of actinide-bearing wastes Reviewed International journal

    N. P. Laverov, S. V. Yudintsev, T. S. Yudintseva, S. V. Stefanovsky, R. C. Ewing, J. Lian, S. Utsunomiya, L. M. Wang

    Geology of Ore Deposits   45   1900

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    Language：English   Publishing type：Research paper (scientific journal)  

  • Radiation effects in ferrate garnet Reviewed International journal

    S. Utsunomiya, S. V. Yudintsev, R. C. Ewing

    Journal of Nuclear Materials   336   1900

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  • Solubility of gold in arsenian pyrite: An EMPA, SIMS and HRTEM investigation Reviewed International journal

    M. Reich, S. E. Kesler, S. Utsunomiya, C. S. Palenik, S. Chryssoulis and R. C. Ewing

    Geochimica et Cosmochimica Acta   69   1900

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  • Electron microscopy investigation of structural transformations in tungsten oxides (WO3) thin films Reviewed International journal

    C. V. Ramana, S. Utsunomiya, R. C. Ewing, C. M. Julien, U. Becker

    Physica Status Solidi (a)   202   1900

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  • Predicting the stability of nano-scale bio-precipitated uranium phases Reviewed International journal

    M. Fayek, S. Utsunomiya, S. M. Pfiffner, L. Anovitz, D. C. White, L. R. Riciputi, R. C. Ewing, & F. J.Stadermann

    Canadian Mineralogist   43   1900

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  • Radiation-Induced Decomposition of U(VI) Alteration Phases of UO2. Reviewed International journal

    S. Utsunomiya, L. M. Wang, & R. C. Ewing

    Earth and Planetary Science Letters   240   1900

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  • The fate of the epsilon phase in the UO2 of the Oklo natural fission reactors Reviewed International journal

    S. Utsunomiya, R. C. Ewing

    Radiochimica Acta   94   1900

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  • The mechanisms of reduction of hexavalent chromium by sodium green rust sulphate: Formation of Cr-goethite Reviewed International journal

    L. L. Skovbjerg, S. L. S. Stipp, S. Utsunomiya, R. C. Ewing

    Geochimica Cosmochimica Acta   70   1900

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  • Formation of V2O3 nanocrystals by thermal reduction of V2O5 thin films Reviewed International journal

    C.V. Ramana, S. Utsunomiya, R. C. Ewing, & U. Becker

    Solid State Communications   137   1900

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  • Structural stability and phase transitions in WO3 thin films Reviewed International journal

    C. V. Ramana, S. Utsunomiya, R. C. Ewing, C. M. Julien, & U. Becker

    Journal of Physical Chemistry B   110   1900

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  • Adsorbed U(VI) surface species on muscovite by TRLFS and HAADF-STEM Reviewed International journal

    T. Arnold, S. Utsunomiya, G. Geipel, R. C. Ewing, N. Baumann, V. Brendler

    Environmental Science & Technology   40   1900

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  • Structural characteristics of lithium nickel phosphate studied using analytical electron microscopy and Raman spectroscopy Reviewed International journal

    C. V. Ramana, A. Ait-Salah, S. Utsunomiya, U. Becker, A. Mauger, F. Gendron, & C. M. Julien,

    Chemistry of Materials   18   1900

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  • Thermal behavior of metal nanoparticles in geologic materials Reviewed International journal

    M. Reich, S. Utsunomiya, S. E. Kesler, L. Wang, R. C. Ewing & U. Becker

    Geology   34   1900

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  • Spectroscopic and chemical imaging analysis of lithium iron triphosphate Invited Reviewed International journal

    C. V. Ramana, A. Ait-Salah, S. Utsunomiya, A. Mauger, F. Gendron & C.M. Julien

    Journal of Physical Chemistry C   111   1900

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  • Summertime Carbonaceous Aerosols Collected in the Marine Boundary of the Arctic Ocean Reviewed International journal

    Z. Xie , J. D. Blum, S. Utsunomiya, R. C. Ewing, X. Wang, & L. Sun

    Journal of Geophysical Research   112   1900

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  • Alteration of UO2+x under oxidizing conditions, Marshall Pass, Colorado, USA Reviewed International journal

    A. Deditius, S. Utsunomiya, R. C. Ewing

    Journal of Alloys and Compounds   444-445   1900

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  • Fate of trace elements during alteration of uraninite in hydrothermal-vein type U-deposit from Marshall Pass, Colorado, USA Reviewed International journal

    A. P. Deditius, S. Utsunomiya, & R. C. Ewing

    Geochimica et Cosmochimica Acta   71   1900

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  • Novel lithium iron pyrophosphate (LiFe1.5P2O7) as a positive electrode for Li-ion batteries Reviewed International journal

    C. V. Ramana, A. Ait-Salah, S. Utsunomiya, A. Mauger, F. Gendron, & C. A. Julien

    Chemistry of Materials   19   1900

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  • Dissolution of radiation-damaged zircon in lateritic soils Reviewed International journal

    S. Delattre, S. Utsunomiya, R. C. Ewing, J. L. Boeglin, J. J. Braun, E. Balan, & G. Calas

    American Mineralogist   92   1900

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  • Effects of ionizing irradiation on hollandite, Ba1Cs0.28Al1.46Fe0.82Ti5.72O16 Reviewed International journal

    A. Abdelouas, S. Utsunomiya, T. Suzuki, B. Grambow, R. C. Ewing, T. Advocat, & F. Bart

    American Mineralogist   93   1900

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  • Spectroscopic ellipsometry characterization of the optical properties and thermal stability of ZrO2 films made by ion-beam assisted deposition Reviewed International journal

    C. V. Ramana, S. Utsunomiya, R. C. Ewing, U. Becker, W. Atuchin, V. Sh. Aliev, & V. N. Kruchinin

    Applied Physics Letters   92   1900

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  • A proposed new type of arsenian pyrite: composition, nanostructure and geological significance. Reviewed International journal

    A. P. Deditius, S. Utsunomiya, D. Renock, R. C. Ewing, C. V. Ramana, U. Becker, & S. E. Kesler

    Geochimica et Cosmochimica Acta   72   1900

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  • The chemical stability of coffinite, USiO4・nH2O; 0＜n＜2, associated with organic matter: A case study from Grants uranium region, New Mexico, USA Reviewed International journal

    A. P. Deditius, S. Utsunomiya, & R. C. Ewing

    Chemical Geology   251   1900

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  • Stability of uranium (VI) peroxide hydrates under ionizing radiation Reviewed International journal

    A. Rey, S. Utsunomiya, J. Gimenez, I. Casas, J. DePablo, R. C. Ewing

    American Mineralogist   94   1900

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  • Nanoscale “liquid” inclusions of As-Fe-S in arsenian pyrite Reviewed International journal

    A. P. Deditius, S. Utsunomiya, R. C. Ewing, S. E. Kesler

    American Mineralogist   94   1900

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  • Haematite nucleation from hydrothermal solution in an oxygenated sea 3.46 billion years ago Reviewed International journal

    M. Hoashi, D. C. Bevacqua, T. Otake, Y. Watanabe, A. Hickman, S. Utsunomiya & H. Ohmoto.

    Nature Geoscience   2   1900

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  • Source-to-receptor pathways of anthropogenic PM2.5 in Detroit, Michigan: Comparison of two inhalation exposure studies Reviewed International journal

    M. Morishita, G. J. Keeler, J. D. McDonald, J. G. Wagner, L. H. Young, S. Utsunomiya, R. C. Ewing, J. R. Harkema

    Atmospheric Environment   43   1900

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  • Structure and chemical compositions of P-coffinite from natural fission reactor at Bangombé, Gabon Reviewed International journal

    A. P. Deditius, S. Utsunomiya, M. A. Wall, V. Pointeau, R. C. Ewing

    American Mineralogist   94   1900

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  • Decoupled geochemical behavior of As and Cu in hydrothermal systems Reviewed International journal

    A. P. Deditius, S. Utsunomiya, R. C. Ewing, S. L. Chryssoulis, D. Venter, S. E. Kesler

    Geology   37   1900

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  • Chemical and structural characterization of As immobilization by nanoparticles of mackinawite (FeSm) Invited Reviewed International journal

    D. Renock, T. Gallegos, S. Utsunomiya, K. Hayes, R. C. Ewing, U. Becker

    Chemical Geology   268   1900

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  • Precipitation and alteration of coffinite (USiO4 n H2O) in the presence of apatite Reviewed

    A. P. Deditius, S. Utsunomiya, V. Pointeau, & R. C. Ewing

    European Journal of Mineralogy   22   1900

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  • Time-response relationaship of nano and micro particle induced lung inflammation. Quartz as reference compound. International journal

    M. Roursgaard, S.S. Poulsen, L.K. Poulsen, M. Hammer, K.A. Jensen, S. Utsunomiya, R.C. Ewing, T.B- Zunic, G.D. Nielsen & S.T. Larsen

    Human and Experimental Toxicology   29   1900

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  • Identification and characterization of nanosized tripuhyite in soil near Sb mine tailings Reviewed International journal

    S. Mitsunobu, Y. Takahashi, S. Utsunomiya, M. Marcus, Y. Terada, T. Iwamura, & M. Sakata

    American Mineralogist   96   1900

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  • Studies of (Cs,Ba)-hollandite dissolution under gamma irradiation at 95 oC and at pH 2.5, 4.4, and 8.6 Reviewed International journal

    T. Suzuki-Muresan, J. Vandenborre, A. Abdelouas, B. Grambow, & S. Utsunomiya

    Journal of Nuclear Materials   419   1900

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  • Early Proterozoic weathering processes under low O2 conditions reconstructed from a 2.45 Ga paleosol in Pronto, Canada Reviewed International journal

    T. Murakami, T. Kasama & S. Utsunomiya

    American Mineralogist   96   1900

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  • Trace metal nanoparticles in pyrite Reviewed International journal

    A. P. Deditius, S. Utsunomiya, M. Reich, S. E. Kesler, R. C. Ewing, R. Hough, & J. Walshe

    Ore Geology Reviews   42   1900

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  • Focused ion beam–transmission electron microscopy applications in ore mineralogy: Bridging micro- and nanoscale observations Reviewed International journal

    C.L. Ciobanu a, N.J. Cook, S. Utsunomiya, A. Pring & L. Green

    Ore Geology Reviews   42   1900

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  • Nanogeoscience in ore systems research: Principles, methods, and applications. Introduction and preface to the special issue Reviewed International journal

    M. Reich, R.M. Hough, A. Deditus, S. Utsunomiya, C.L. Ciobanu, & N.J. Cook

    Ore Geology Reviews   42   1900

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  • Gold-telluride nanoparticles revealed in arsenic-free pyrite International journal

    C. L. Ciobanu, N. J. Cook, S. Utsunomiya, M. Kogagwa, L. Green, S. Gilbert & B. Wade

    American Mineralogist   97   1900

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  • Adsorption of ytterbium onto Saccharomyces cerevisiae fungal cells – A pH-dependent contribution of phosphoryl functional group International journal

    M. Jiang, T. Ohnuki, S. Yamazaki, K. Tanaka & S. Utsunomiya

    Journal of Radioanalytical and Nuclear Chemistry   295   1900

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  • The coupled geochemistry of Au and As in pyrite from hydrothermal ore deposits

    A. P. Deditius, M. Reich, S. E. Kesler, S.Utsunomiya, S. L. Chryssoulis, J. Walshe, R. C. Ewing

    Geochimica et Cosmochimica Acta   140   644-670   1900

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  • Mechanisms of water oxidation by non-heme iron catalysts when driven with sodium periodate.

    A.R. Parent, T. Nakazono, S. Lin, S.Utsunomiya, Ken Sakai

    Dalton Transactions   43   1900

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  • Role of vein-phases in nanoscale sequestration of U, Nb, Ti, and Pb during the alteration of pyrochlore

    A.P.Deditius, F.Skomurski, S.Utsunomiya, R.C.Ewing

    Geochim. Cosmochim   150   1900

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  • Effect of minerals on accumulation of Cs by fungus Saccaromyces cerevisiae

    T.Ohnuki, F.Sakamoto, S.Yamasaki, H.Shiotsu, S.Utsunomiya, N.Watanabe, T.Kozaki

    Journal of Environmental Radioactivity   144   1900

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  • Constraints on Hf and Zr mobility in high-sulfidation epithermal systems: Formation of kosnarite, KZr2(PO4)3, in the Chaquicocha gold deposit, Yanacocha district,Peru

    A.P. Deditius, S.Utsunomiya, P. Sanchez-Alvaro, M. Reich, R. Ewing, S. Kesler

    Mineralium Deposita   50   1900

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  • Sorption of trivalent cerium by a mixture of microbial cells and manganese oxides: Effect of microbial cells on the oxidation of trivalent cerium

    T. Ohnuki, M. Jiang, F. Sakamoto, N. Kozai, S. Yamasaki, Q. Yu, K. Tanaka, S.Utsunomiya, X. Xia, K. Yang, & J. He

    Geochimica Cosmochimica Acta   163   1900

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  • Vapor hydration of a simulated borosilicate nuclear waste glass in unsaturated conditions at 50°C and 90°C

    A. Ait Chaou, A. Abdelouas, Y. El Mendili, R. Bouakkaz, S.Utsunomiya, C. Martin, X. Bourbon

    RSC Adv   5   1900

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Books

  • Nuclear accidents in Fukushima, Japan and exploration of effective decontaminant for the 137Cs-contaminated soils. In Advances in Nuclear Fuel(ed. Shripad T. Revankar)

    H. Iwata, H. Shiotsu, M. Kaneko, & S. Utsunomiya

    Intech  2012.2 

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    Responsible for pages：p123-142   Book type：Scholarly book

  • Effect of Redox Conditions on Actinide Speciation and Partitioning with Colloidal Matter. In Actinide Nanoparticle Research (eds. S. N. Kalmykov and M.A. Denecke)

    S. N. Kalmykov, E. V. Zakharova, A. P. Novikov, B. F. Myasoedov, & S. Utsunomiya

    Springer  2011.11 

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    Responsible for pages：p 361-376   Book type：Scholarly book

  • Scanning Transmission Electron Microscopy and Related Techniques for Research on Actinide and Radionuclide Nanomaterials. In Actinide Nanoparticle Research (eds. S. N. Kalmykov and M.A. Denecke)

    S. Utsunomiya, M. Kogawa, E. Kamiishi, & R. C. Ewing

    Springer  2011.11 

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    Responsible for pages：p33-62   Book type：Scholarly book

  • Electron Microscopy Imaging Techniques in Environmental and Geological Science. In Dekker Encyclopedia of Nanoscience and Nanotechnology, (eds. J. A. Schwartz, C. I. Contescu, and K. Putyera)

    S. Utsunomiya, C. S. Palenik, & R. C. Ewing

    Marcel Dekker Inc., New York  2004.11 

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    Responsible for pages：p1087-1097   Book type：Scholarly book

  • Chapter 9. Commentary on the Role of Microorgansims and Nanoparticles in Radionuclides Migration through Groundwater. In "Behavior of radionuclides in the environment I" (Eds. Kenji Kato, Alexei Konoplev, Stepan N. Kalmykov)

    Satoshi Utsunomiya, Toshihiko Ohnuki, Kenji Kato, and Stepan N. Kalmykov

    2020.6 

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    Language：Japanese  

  • Chapter 3. Function of Microbes on Chemical Species Transformation of Radionuclides In "Behavior of radionuclides in the environment I" (Eds. Kenji Kato, Alexei Konoplev, Stepan N. Kalmykov)

    Toshihiko Ohnuki, Takuo Ozaki, Naofumi Kozai, and Satoshi Utsunomiya

    2020.6 

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    Language：Japanese  

  • Chapter 7. Application of Electron Microscopy to Understanding Colloid-Facilitated Transport of Radionuclides at the Mayak Production Association Facility, Near Lake Karachai, Russia. In "Behavior of radionuclides in the environment I" (Eds. Kenji Kato, Alexei Konoplev, Stepan N. Kalmykov)

    Satoshi Utsunomiya, Hiroki Yokoo, Takumi Oki, Keisuke Kawamoto, Ayaka Takeda, Honggui wang, and Rodney C. Ewing

    2020.6 

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    Language：Japanese  

  • Physico-chemical environment of an Archean Mid-Ocean Ridge: estimate of seawater depth and hydrothermal fluid composition. In Geochemistry and the Origin of Life, (eds. S. Nakashima, S. Maruyama, A. Brack and B. F. Windley)

    K. Kitajima, S. Utsunomiya & S. Maruyama

    Universal Academy Press Inc.  2001.11 

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    Responsible for pages：p179-202   Book type：Scholarly book

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Presentations

  • Challenging Radionuclides in Environment at the Atomic Scale: Issues in Waste Disposal and Fukushima Invited International conference

    Satoshi Utsunomiya

    Goldschmidt Conference  2016.6 

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    Event date： 2016.6 - 2016.7

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Yokohama   Country：Japan  

    Radionuclides are beneficial in many instances such as power generation, industrial, medical, and geochronological applications. Conversely, some fission products and actinides produced in nuclear reactors are radiotoxic and have long half-lives. These radionuclides need to be isolated and safely stored for geological periods; however, there have been instances where the release of these radionuclides has caused serious environmental issues. In such instances, the release of these radionuclides is governed by their interaction with inorganic, organic, and biological substances at the molecular scale in the Earth’s surface and sub-surface. Naturally-occurring nano-particles and microorganisms also play an important role in facilitating or retarding the migration of low-solubility radionuclides. The migration processes at the nano- and atomic-scales have been illustrated by atomic-resolution transmission electron microscopy (TEM). TEM is a powerful technique that enables us to investigate the structural and chemical properties of these particles at scales ranging from micron to sub-angstrom. This talk will address some of the observable microscopic phenomena that can impact the migration of radionuclides in surface and subsurface environments; physical and chemical alteration of nuclear waste and UO2+x, colloid-facilitated transport, microbial nanocrystallization of rare earth elements that are used as surrogate of trivalent actinides, the interaction between nanoparticles and microorganisms, and most recently contamination at Fukushima. At the present, 134Cs and 137Cs are important dose contributors, and their radioactivity will remain in soils, mainly fixed in the form of submicron-sized clay minerals. Some of the particles associated with Cs are transported while surface soils are run off. On the other hand, at the initial stage of Cs release from Fukushima Daiichi Nuclear Power Plant, low-solubility Cs-rich micro-particles, which contain up to ~36 wt% of Cs as Cs2O, are responsible for ~90% of the radioactivity (rather than soluble forms of Cs such as CsOH). The interior of these particles exhibit evidence of various nanoscale processes in the molten core-concrete interaction (MCCI) that occurred subsequent to melt down in the primary containment vessel. Still, these particles play an important role in the dispersion of low-volatile radionuclides into the surrounding environment. The latter half of the talk will highlight various microscopic but critical phenomena in Fukushima as unveiled by state-of-the-art TEM investigations

    Other Link： http://goldschmidt.info/2016/plenaryPeriodsView

  • Nanoparticle formation of lanthanides on Saccharomyces cerevisiae, February 18-19, 2013, Japan-UK workshop, The Studio, Birmingham, UK. International conference

    Utsunomiya S, Shiotsu H, Jiang M, Ohnuki T

    Japan-UK workshop, The Studio  2013.2 

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    Event date： 2013.2

    Language：English  

    Venue：Birmingham, UK   Country：United Kingdom  

  • Accumulation of lanthanides and actinides by microorganisms – present status International conference

    Ohnuki T, Kozai N, Sakamoto F, Yamasaki S, Utsunomiya S, Nishiguchi N, Suzuki Y

    Japan-UK workshop, The Studio  2013.2 

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    Event date： 2013.2

    Language：English  

    Venue：Birmingham, UK.   Country：United Kingdom  

  • Characteristic　of the long-term accumulation of lanthanides on Saccharomyces cerevisiae International conference

    Shiotsu H, Jiang M, Nakamatsu Y, Ohnuki T, Utsunomiya S

    Characteristic　of the long-term accumulation of lanthanides on Saccharomyces cerevisiae  2012.6 

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    Event date： 2012.6

    Language：English  

    Venue：Montreal, Canada   Country：Canada  

  • Cesium contamination in Fukushima soils and exploration of effective decontaminant International conference

    Utsunomiya S

    International workshop on post-Fukushima challenges in nuclear safety and environmental contamination  2012.6 

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    Event date： 2012.6

    Language：English  

    Venue：Korea   Country：Korea, Republic of  

  • Chemical state of Fe on fine and ultrafine particles in the urban atmosphere in Japan, Workshop Study on Radionuclides Migration for Environmental Safety Assessment International conference

    Nakamatsu Y, Kaneko M, Kogawa M, Utsunomiya S

    SSRF  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Shanghai   Country：China  

  • Importance of XAFS study in Environmental Chemistry International conference

    Utsunomiya S

    SSRF  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Shanghai   Country：China  

  • Microscopic View of Colloids Associated with Radionuclides in the Environments Invited International conference

    Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, September 18 - 23, 2011, Beijing, China. Invited  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Post-Adsorption Process of REE (Sm, Yb) Phosphate Nano-Mineralization by Microorganism International conference

    Jiang M, Ohnuki T, Tanaka K, Kozai N, Kamiishi E, Utsunomiya S

    International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Mechanism of Selenite Sequestration by Low-Soluble Phosphate Minerals International conference

    Kamiishi E, Utsunomiya S

    International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China.   Country：China  

  • Alteration of Bentonite-Iron System under the Hyper Alkaline Condition International conference

    Sakamaki K, Iwata H, Kamiishi E, Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Mechanism of Selenite Sequestration by Low-Soluble Phosphate Minerals International conference

    Kamiishi E, Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Alteration of Bentonite-Iron System under the Hyper Alkaline Condition International conference

    Sakamaki K, Iwata H, Kamiishi E, Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Fate of Plutonium Derived From the Atomic Bomb Detonated at Nagasaki, Japan International conference

    Iwata H, Sakamaki K, Yasuda K, Ohnuki T, Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Fate of Plutonium Derived From the Atomic Bomb Detonated at Nagasaki, Japan International conference

    Iwata H, Sakamaki K, Yasuda K, Ohnuki T, Utsunomiya S

    Migration 2011, 13th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere  2011.9 

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    Event date： 2011.9

    Language：English  

    Venue：Beijing, China   Country：China  

  • Physical and Chemical State of Fe-phases in Chinese Dust Storm International conference

    Kaneko M, Nakamatsu Y, Xie Z., Utsunomiya S

    Goldschmidt Conference  2011.8 

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    Event date： 2011.8

    Language：English  

    Venue：Prague   Country：Czech Republic  

  • Nanoscale Occurrence of Radionuclides in the Environments Revealed by Scanning Transmission Electron Microscopy (STEM) Invited International conference

    Utsunomiya S

    The 2010 International Chemical Congress of Pacific Basin Societies  2010.12 

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    Event date： 2010.12

    Language：English  

    Venue：Honolulu, Hawaii   Country：United States  

  • Chemical State of Fe in Fine and Ultrafine Particles in the Urban Atmosphere International conference

    Nishita C, Kogawa M, S.Utsunomiya

    Goldschmidt conference  2010.6 

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    Event date： 2010.6

    Language：English  

    Venue：USA   Country：United States  

  • Biological Nano-Mineralization of Yb phosphate by Saccharomyces cerevisiae International conference

    Jiang M, Ohnuki T, Kamiishi E, Tanaka K, Kozai N, Suzuki Y, Utsunomiya S

    Goldschmidt conference  2010.6 

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    Event date： 2010.6

    Language：English  

    Venue：USA   Country：United States  

  • Mechanism of Selenite Sequestration byLow-Soluble Phosphate Minerals International conference

    Kamisihi E, Utsunomiya S

    Goldschmidt conference  2010.6 

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    Event date： 2010.6

    Language：English  

    Venue：USA   Country：United States  

  • Pb-Incorporation into Synthetic Pb-Doped Ziricon International conference

    Kogawa M, Watson B, Ewing R, Utsunomiya S

    Goldschmidt conference  2010.6 

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    Event date： 2010.6

    Language：English  

    Venue：USA   Country：United States  

  • Nanoscale Process in the Alteration of Bentonite-Iron System Under the Hyper Alkarine Conditions International conference

    Jiang M, Ohnuki T, Kamiishi E, Tanaka K, Kozai N, Suzuki Y, S.Utsunomiya

    Goldschmidt conference  2010.6 

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    Event date： 2010.6

    Language：English  

    Venue：USA   Country：United States  

  • Colloid Transport of Plutonium in the Far-field of the Mayak Production Association, Russia. International conference

    Utsunomiya S

    Yonsei University – Kyushu University symposium  2009.8 

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    Event date： 2009.8

    Venue：Seoul   Country：Korea, Republic of  

  • Behaviour of trace elements in arsenian pyrite in ore deposits International conference

    Deditius A.P., Utsunomiya S., Kesler S.E., Ewing R.C. and Walshe J

    The 10th Biennal Meeting of SGA  2009.8 

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    Event date： 2009.8

    Venue：Townsville   Country：Australia  

  • Atmospheric Nanoparticle: Multi-scale Analysis on Speciation of Toxic Metals in Urban and Indoor Dust International conference

    Jiang M., Jensen K.A., Utsunomiya S

    Goldschmidt conference,  2009.6 

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    Event date： 2009.6

    Venue：Davos   Country：Switzerland  

  • Groundwater Nanoparticles in the Far-field at the Nevada Test Site International conference

    Utsunomiya S

    Goldschmidt conference  2009.6 

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    Event date： 2009.6

    Venue：Davos   Country：Switzerland  

  • Behavior of nanoparticles associated with radionuclides. Russian-German symposium on actinide nanoparticles International conference

    Utsunomiya S

    2009.5 

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    Event date： 2009.5

    Venue：Moscow   Country：Russian Federation  

  • Decoupling of Cu and As in Magmatic-hydrothermal systems: Evidence from the Pueblo Viejo Au-Ag Deposit Invited

    Deditius A.P., Utsunomiya S. and Kesler S.E

    Dominican Republic. Goldschmidt Conference  2008.7 

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    Event date： 2008.7

    Venue：Vancouver   Country：Canada  

  • Coffinite and ningyoite from the natural, nuclear reactor at Bangombé, Gabon International conference

    Utsunomiya S., Deditius A.P., Pointeau V. and Ewing R.C.

    Goldschmidt Conference  2008.7 

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    Event date： 2008.7

    Venue：Vancouver   Country：Canada  

  • Nanoscale geochemistry and mineralogy of arsenian pyrite in ore deposits International conference

    Deditius A.P., Utsunomiya S., Renock D., Reich M., Ewing R.C., Chryssoulis S.L., Venter D., Ramana C.V., Becker U. and Kesler S.E

    Gordon Research Conference: Geochemistry of Mineral Deposits  2008.6 

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    Event date： 2008.6 - 2008.7

    Venue：Il Ciocco   Country：Italy  

  • Cesium-rich micro-particles: A window into the meltdown events at the Fukushima Daiichi Nuclear Power Plant. Invited International conference

    Satoshi Utsunomiya

    American Chemical Society  2017.4 

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    Event date： 2018.6

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：San Francisco   Country：United States  

  • Nano- and molecular-scale phenomena in the subsurface environment with nanoparticles and microorganisms; implication to nuclear waste management

    Utsunomiya S

    Specific behavior of anthropogenic radionuclides at solid solution interface: implication for migration and remediation  2013.11 

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    Event date： 2013.11

    Language：English  

    Venue：Fukushima, Japan   Country：Japan  

  • Migration International conference

    Jiang, M., Ohnuki, T., Utsunomiya, S

    Migration2009  2009.9 

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    Event date： 2009.9

    Venue：Kennewick, WA   Country：United States  

  • Migration International conference

    Utsunomiya S., Kersting A., Ewing, R.C

    Migration2009  2009.9 

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    Event date： 2009.9

    Venue：Kennewick, WA   Country：United States  

  • Nano-scale phenomena in the interaction between apatite and aqueous Pb International conference

    Kamiishi E., Utsunomiya S

    Goldschmidt conference  2009.6 

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    Event date： 2009.6

    Venue：Davos   Country：Switzerland  

  • “Stability of synthetic uranium(VI) peroxide hydrates under ionizing radiation” International conference

    A. Rey, S. Utsunomiya, J. Gimenez, I. Casas, J. de Pablo, R. C. Ewing,

    Migration 2007  2007.8 

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    Event date： 2007.8

    Venue：Munich   Country：Germany  

  • Stability of coffinite, USiO4, under reducing and oxidizing conditions Invited International conference

    Deditius A.P., Pointeau V., Utsunomiya S., Poinssot C., Ewing R.C

    Migration 2007  2007.8 

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    Event date： 2007.8

    Venue：München   Country：Germany  

  • “Arsenic uptake and release on sulfide nanoparticles” International conference

    Renock, S. Utsunomiya, T. J. Gallegos, K. F. Hayes, R. C. Ewing, and U. Becker

    Goldschmidt conference 2007  2007.8 

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    Event date： 2007.8

    Venue：Cologne   Country：Germany  

  • Crystal chemistry of Hf-rich kosnarite [KZr2(PO4)3] International conference

    Deditius A.P., Utsunomiya S., Kesler S.E., Ewing R.C

    Frontiers in Mineral Sciences 2007  2007.6 

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    Event date： 2007.6

    Venue：Cambridge   Country：United Kingdom  

  • New form of arsenian pyrite, (Fe,As3+)S2 International conference

    Deditius A.P., Utsunomiya S., Ramana C.V., Kesler S.E., Ewing R.C

    Frontiers in Mineral Sciences 2007  2007.6 

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    Event date： 2007.6

    Venue：Cambridge   Country：United Kingdom  

  • “Formation and alteration of coffinite (USiO4) in the Grants uranium deposits, New Mexico.” Invited International conference

    A. P. Deditius., S. Utsunomiya and R. C. Ewing,

    223rd American Chemical Society National Meeting  2007.3 

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    Event date： 2007.3

    Venue：Chicago, Illinois   Country：United States  

  • “Colloid Transport of Plutonium in the Far-field of the Mayak Production Association, Russia” Invited International conference

    S. Utsunomiya, R. C. Ewing, A. P. Novikov, S. N. Kalmykov, F. Horreard, A. Merkulov, S. B. Clark, V. V. Tkachev, B. F. Myasoedov

    233rd American Chemical Society Meeting  2007.3 

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    Event date： 2007.3

    Venue：Chicago, IL   Country：United States  

  • “Alteration of coffinite (USiO4) under reducing and oxidizing conditions” International conference

    A. P. Deditius, S. Utsunomiya and R.C. Ewing,

    Materials Research Society  2006.11 

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    Event date： 2006.11 - 2006.12

    Venue：Boston, Massachusetts   Country：United States  

  • “Synthesis, Structure, and Electrochemical Properties of Li4Ti5O12” International conference

    C. V. Ramana, S. Utsunomiya, R. C. Ewing, U. Becker, K. Zaghib & C.M. Julien,

    Materials Research Society  2006.11 

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    Event date： 2006.11 - 2006.12

    Venue：Boston, MA   Country：United States  

  • “Nanoparticles of Trace Elements in the Environment” Invited International conference

    S. Utsunomiya

    Slovenia & US workshop on Environmental Science & Engineering”  2006.9 

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    Event date： 2006.9

    Venue：Ljubljana   Country：Slovenia  

  • “Migration of trace elements via nanoscale process” Invited

    S. Utsunomiya

    19th General Meeting of International Mineralogical Association,  2006.7 

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    Event date： 2006.7

    Venue：Kobe   Country：Japan  

  • “Alteration of UO2 under oxidizing conditions” International conference

    A. Deditius, S. Utsunomiya, R. C. Ewing,

    2006 Plutonium Future  2006.7 

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    Event date： 2006.7

    Venue：Pacific Grove   Country：United States  

  • “Radiation effects in garnet” International conference

    S. Utsunomiya, R. C. Ewing

    American Geophysical Union, spring meeting  2006.5 

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    Event date： 2006.5

    Venue：Baltimore, Maryland   Country：United States  

  • “STEM and electrochemical SFM characterization of As-containing nanoscale phases on iron sulfides” International conference

    D. Renock, U. Becker, S. Utsunomiya, R. C. Ewing,

    2006.3 

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    Event date： 2006.3

    Venue：Atlanta, Georgia   Country：United States  

  • “Nanoparticle-host interaction in the solid state: temperature-induced dissolution and growth of natural gold nanoparticles in arsenian pyrite” International conference

    M. Reich, S. Utsunomiya, U. Becker, R. C. Ewing, L. M. Wang

    NanoPEPS Workshop  2006.1 

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    Event date： 2006.1

    Venue：Albuquerque, New Mexico   Country：United States  

  • Nanoscale occurrence of trace metals revealed by Z-contrast STEM Imaging International conference

    S. Utsunomiya, R. C. Ewing

    NanoPEPS Workshop  2006.1 

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    Event date： 2006.1

    Venue：Albuquerque, New Mexico,   Country：United States  

  • nvestigation of Temperature Induced Structural Transformations in Tungsten Oxide (WO3) Thin Films International conference

    R. Chintalapalle, S. Utsunomiya, C. Julien and U. Becker

    208th Meeting of The Electrochemical Society  2005.10 

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    Event date： 2005.10

    Venue：Los Angeles   Country：United States  

  • Geochronology and Fluid-rock Interaction Associated with the Nopal I Uranium Deposit, Peña Blanca, Mexico

    M. Fayek, P.C. Goodell, M. Ren, L.R. Riciputi, A. Simmons, S. Utsunomiya, and R.C. Ewing

    Annual meeting of Geological Society of America  2005.10 

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    Event date： 2005.10

    Venue：Salt Lake City   Country：United States  

  • The effect of ionizing radiation on U6+ phases International conference

    S. Utsunomiya and R. C. Ewing

    Annual meeting of Geological Society of America  2005.10 

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    Event date： 2005.10

    Venue：Salt Lake City   Country：United States  

  • Radiation damage-enhanced chemical alteration of zircon in laterite at Nsimi, Cameroon International conference

    S. Delattre, S. Utsunomiya, R. C. Ewing, and E. Balan

    Annual meeting of Geological Society of America  2005.10 

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    Event date： 2005.10

    Venue：Salt Lake City   Country：United States  

  • Fate of the epsilon phase in the Oklo natural reactors International conference

    S. Utsunomiya, R. C. Ewing

    Migration 2005  2005.9 

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    Event date： 2005.9

    Venue：Avignon   Country：France  

  • Identification of adsorbed U(VI) surface species on muscovite by TRLFS and HAADF-STEM International conference

    T. Arnold, S. Utsunomiya, G. Geipel, R. C. Ewing, N. Baumann, V. Brendler

    Migration 2005  2005.9 

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    Event date： 2005.9

    Venue：Avignon   Country：France  

  • Effect of colloids on radionuclide migration in oxic and anoxic conditions International conference

    St. N. Kalmykov, A. P. Novikov, R. C. Ewing, S. Utsunomiya

    Migration 2005  2005.9 

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    Event date： 2005.9

    Venue：Avignon   Country：France  

  • Radiation-induced decomposition of U6+ alteration phases of UO2 International conference

    S. Utsunomiya, R. C. Ewing

    29th International Symposium on the Scientific Basis for Radioactive Waste management  2005.9 

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    Event date： 2005.9

    Venue：Ghent   Country：Belgium  

  • Natural uranium getters in near surface environments at the Nopal I Deposit Pena Blanca, Mexico Invited International conference

    M. Fayek, S. Utsunomiya, R. C. Ewing, A. Simmons

    15th Annual V.M. Goldschmidt Conference  2005.5 

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    Event date： 2005.5

    Venue：Moscow, Idaho   Country：Russian Federation  

  • The epsilon phase in the UO2 of the Oklo Natural Reactors International conference

    S. Utsunomiya, R. C. Ewing

    15th Annual V.M. Goldschmidt Conference  2005.5 

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    Event date： 2005.5

    Country：Japan  

  • Identification of trace metal speciation in environment using Z-contrast imaging International conference

    S. Utsunomiya

    2005.5 

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    Event date： 2005.5

    Venue：Moscow, Idaho   Country：Russian Federation  

  • In situ observation of thermodynamic size effects on melting of natural gold nanoparticles International conference

    M. Reich, S. Utsunomiya, U. Becker, L. Wang, R. C. Ewing

    15th Annual V.M. Goldschmidt Conference  2005.5 

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    Event date： 2005.5

    Venue：Moscow, Idaho   Country：Russian Federation  

  • Radiation damage and alteration of zircon in granitiods from Jack Hills, western Australia International conference

    S. Utsunomiya, A. J. Cavosie, J. W. Valley, S. A. Wilde, and R. C. Ewing

    Annual meeting of Geological Society of America  2004.11 

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    Event date： 2004.11

    Venue：Denver   Country：United States  

  • Cr(VI) reduction by green rust International conference

    L. L. Skovbjerg , S. L. S. Stipp , S. Utsunomiya and R. C. Ewing

    14th Annual V.M. Goldschmidt Conference  2004.6 

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    Event date： 2004.6

    Venue：Copenhagen   Country：Denmark  

  • Behavior of light REE in Precambrian paleosols: International conference

    T. Murakami, M. Sato, S. Utsunomiya, T. Kasama and B. Sreenivas,

    Implication for atmospheric oxygen evolution" 14th Annual V.M. Goldschmidt Conference  2004.6 

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    Event date： 2004.6

    Venue：Copenhagen   Country：Denmark  

  • Cr(VI) reduction by green rust International conference

    L. L. Skovbjerg , S. L. S. Stipp , S. Utsunomiya and R. C. Ewing

    14th Annual V.M. Goldschmidt Conference  2004.6 

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    Event date： 2004.6

    Venue：Copenhagen   Country：Denmark  

  • The effect of ionizing radiation on uranophane International conference

    S. Utsunomiya, L. M. Wang, R. C. Ewing, S. B. Clark and M. Douglas

    2004 Spent Fuel Workshop  2004.4 

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    Event date： 2004.4

    Venue：Lake Forest, Illinois   Country：United States  

  • Nano- and micro-mineralogy of airborne trace metals in the city background and a high-traffic street in Copenhagen (Denmark) International conference

    K. A. Jensen, S. Utsunomiya, M. Glasius, P. Wåhlin, F. Palmgren, N. Ø. Olesend, S. Grundvig and R.C. Ewing

    The 26th Nordic Geological Winter Meeting  2004.1 

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    Event date： 2004.1

    Venue：Uppsala   Country：Sweden  

  • Nano- and micro-mineralogy of airborne trace metals in the city background and a high-traffic street in Copenhagen (Denmark) International conference

    K. A. Jensen, S. Utsunomiya, M. Glasius, P. Wåhlin, F. Palmgren, N. Ø. Olesend, S. Grundvig and R.C. Ewing

    The 26th Nordic Geological Winter Meeting  2004.1 

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    Event date： 2004.1

    Venue：Uppsala   Country：Sweden  

  • Nanocrystals and Nanodomains of trace elements in geologic materials International conference

    S. Utsunomiya and R. C. Ewing

    Frontiers in Nanoscience and Nanotechnology: A Symposium  2003.11 

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    Event date： 2003.11

    Venue：Ann Arbor, Michigan   Country：United States  

  • Role of vein phases in immobilizing uranium and lead released from altered betafite International conference

    F. Skomurski, S. Utsunomiya, and R. C. Ewing

    Annual Meeting of Geological Society of America  2003.11 

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    Event date： 2003.11

    Venue：Seattle   Country：United States  

  • “Fate of Pb in an Archean zircon” International conference

    S. Utsunomiya, C. S. Palenik, J. W. Valley, A. J. Cavosie, S. A. Wilde and R. C. Ewing

    Annual Meeting of Geological Society of America  2003.11 

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    Event date： 2003.11

    Venue：Seattle   Country：United States  

  • “Solubility limit of gold in arsenian pyrite from Carlin-type and epithermal deposits: EMPA, SIMS, HRTEM and quantum-mechanical costraints” International conference

    M. Reich, C. S. Palenik, S. Utsunomiya, U. Becker, L. Stixrude, S. E. Kesler, R. C. Ewing

    Annual Meeting of Geological Society of America  2003.11 

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    Event date： 2003.11

    Venue：Seattle   Country：United States  

  • “Nano- and Micro-scale alteration of uraninite at the Oklo-Okelobondo natural fission reactors, Gabon” International conference

    M. Fayek, S. Utsunomiya, R. C. Ewing and L. Riciputi

    Annual Meeting of Geological Society of America  2003.11 

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    Event date： 2003.11

    Venue：Seattle   Country：United States  

  • Neptunium association with uranium (VI) silicate solid phases International conference

    M. Douglas, S. B. Clark, J. I. Friese, B. W. Arey, E. C. Buck, B. D. Hanson, S. Utsunomiya and R. C. Ewing

    9th International Conference on Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (MIGRATION '03)  2003.9 

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    Event date： 2003.9

    Venue：Gyeongju   Country：Korea, Republic of  

  • “Biotite dissolution processes and mechanisms: Early stage weathering environment”

    T. Murakami, S. Utsunomiya, T. Yokoyama, and T. Kasama

    13th Annual V.M. Goldschmidt Conference  2003.9 

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    Event date： 2003.9

    Venue：Kurashiki   Country：Japan  

  • “Identity of transition and heavy metal nanoparticles in the urban outdoor and indoor atmosphere: Implications for health effect assessments” International conference

    K. A. Jensen, S. Utsunomiya, M. Glasius, F. Palmgren and R. C. Ewing

    The Seventh Nordic Conference on Toxicology and Environmental Mutagenesis  2003.6 

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    Event date： 2003.6

    Venue：Bornholm   Country：Denmark  

  • “Modeling colloid transport of radionuclides: Where are the data gaps for the Yucca mountain performance assessment” International conference

    K. A. Traexler, S. Utsunomiya, A. Kersting, and R. C. Ewing

    Scientific Basis for Radioactive Waste management XXVII  2003.6 

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    Event date： 2003.6

    Venue：Kalmer   Country：Sweden  

  • “Modeling colloid transport of radionuclides: Where are the data gaps for the Yucca mountain performance assessment” International conference

    K. A. Traexler, S. Utsunomiya, A. Kersting, and R. C. Ewing

    Scientific Basis for Radioactive Waste management XXVII  2003.6 

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    Event date： 2003.6

    Venue：Kalmer   Country：Sweden  

  • “Application of high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) to trace element Nanogeoscience” International conference

    S. Utsunomiya and R. C. Ewing

    Spring meeting of Michigan Microscopy and Microanalysis  2003.4 

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    Event date： 2003.4

    Venue：Ann Arbor, Michigan   Country：United States  

  • “The oxygen isotopic composition of nano-scale uraninite at the Oklo-Okelobondo natural fission reactors, Gabon”

    M. Fayek, S. Utsunomiya, R. C. Ewing, L. R. Riciputi, and K. A. Jensen

    Uranium Geochemistry  2003.4 

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    Event date： 2003.4

    Venue：Nancy   Country：France  

  • “Microscopy studies of cation incorporation into uranium (VI) solid phases” International conference

    M. Douglas, S. B. Clark, S. Utsunomiya, and R. C. Ewing

    225th American Chemical Society Meeting  2003.3 

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    Event date： 2003.3

    Venue：New Orleans, LA   Country：United States  

  • “Nano-scale heavy metal phases on atmospheric and groundwater colloids” Invited International conference

    S. Utsunomiya, K. A. Traexler, L. M. Wang, and R. C. Ewing

    225th American Chemical Society Meeting  2003.3 

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    Event date： 2003.3

    Venue：New Orleans, LA   Country：United States  

  • “Microstructure of high-energy Zn implanted silica glasses” International conference

    S. Nakao, S. Utsunomiya, K. Sun, L. M. Wang, Y. Miyagawa, and S. Miyagawa

    17th International Conference on the Application of Accelerators in Research and Industry, CAARI 2002  2002.11 

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    Event date： 2002.11

    Venue：Denton, Texas   Country：United States  

  • “Gold Nanoparticles in Arsenian Pyrite from Carlin-type Deposit Observed by HR-TEM” International conference

    C. S. Palenik, S. Utsunomiya, S. E. Kesler, and R. C. Ewing

    Annual Meeting of Geological Society of America  2002.10 

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    Event date： 2002.10

    Venue：Denver   Country：United States  

  • “Biotite Dissolution under anoxic condition: implication for Fe Behavior during Anoxic Weathering” International conference

    T. Murakami, J. Ito, S. Utsunomiya, and T. Kasama

    Annual Meeting of Geological Society of America  2002.10 

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    Event date： 2002.10

    Venue：Denver   Country：United States  

  • “Uraninite Nanocrystals and Fullerene in Atmospheric Particulates” International conference

    S. Utsunomiya, K. A. Jensen, G. J. Keeler, and R. C. Ewing

    Annual Meeting of Geological Society of America  2002.10 

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    Event date： 2002.10

    Venue：Denver   Country：United States  

  • “Application of high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and STEM-energy dispersive X-ray spectrometry (EDX) mapping to investigate nano-scale particles in environment” International conference

    S. Utsunomiya and R. C. Ewing

    18th International Mineralogical Association  2002.9 

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    Event date： 2002.9

    Venue：Edinburg   Country：United Kingdom  

  • “Reconstruction of 2.5 Ga weathering of Pronto granite” International conference

    T. Murakami, T. Kasama, and S. Utsunomiya

    2002.8 

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    Event date： 2002.8

    Venue：Davos   Country：Switzerland  

  • “Ion-Substitution in a Uranium(VI) Silicate” International conference

    M. Douglas, S.B. Clark, S. Utsunomiya, and R.C. Ewing

    2002.6 

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    Event date： 2002.6

    Venue：Spokane, Washington   Country：United States  

  • “Elemental Mapping & Redox State of Nano-particles by HAADF-STEM, EFTEM, STEM-EDX and PEELS．” International conference

    S. Utsunomiya & R. C. Ewing

    39th Annual Meeting of the Clay Minerals Society  2002.6 

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    Event date： 2002.6

    Venue：Boulder, Colorado   Country：United States  

  • “Characterization of mineral colloids in ground water at the Nevada test site by advanced TEM techniques” International conference

    A. Kersting, L. M. Wang, L. P. You, S. Utsunomiya, P. H. Zhao, R. C. Ewing

    Abstracts of papers of the American Chemical Society  2002.4 

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    Event date： 2002.4

    Country：United States  

  • “Ion irradiation effects in the garnet-based waste form” International conference

    S. Utsunomiya, L.M. Wang, R.C. Ewing, S.V. Yudintsev,

    MRS fall meeting, Symposium JJ  2001.11 

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    Event date： 2001.11

    Country：Other  

  • “Isomorphic capacity and radiation stability of the garnet host for actinide waste immobilization” International conference

    S.V. Yudintsev, M.I. Lapina, T.S. Yudintseva, S. Utsunomiya, L.M. Wang, R.C. Ewing

    MRS fall meeting, Symposium JJ  2001.11 

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    Event date： 2001.11

    Country：Other  

  • “Isomorphic capacity and radiation stability of the garnet host for actinide waste immobilization” International conference

    S.V. Yudintsev, M.I. Lapina, T.S. Yudintseva, S. Utsunomiya, L.M. Wang, R.C. Ewing

    MRS fall meeting, Symposium JJ  2001.11 

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    Event date： 2001.11

    Country：Other  

  • “Trace metal incorporation into Uranophane [Ca(UO2)(SiO3OH)2]5H2O” International conference

    M. Douglas, S.B. Clark, S. Utsunomiya, R.C. Ewing

    International conference on all aspects of the science and technology of actinides  2001.11 

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    Event date： 2001.11

    Country：Other  

  • “Ion irradiation effects in actinide and rare earth element garnets” International conference

    S. Utsunomiya, L.M. Wang, R.C. Ewing, S.V. Yudintsev

    the 11th international conference on radiation effects in insulators  2001.9 

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    Event date： 2001.9

    Country：Other  

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MISC

  • Hydrothermal treatments on powders of plagioclase -Lunar resources utilization

    S. Utsunomiya & H. Takeda

    Proceedings of the 29th ISAS Lunar and Planetary Symposium   2009.10

  • Colloid Transport of Radionuclides: Yucca Mountain Performance Assessment

    K. A. Traexler, S. Utsunomiya, A. B. Kersting, & R. C. Ewing

    Proceedings of the Material Research Society Symposium   2009.10

  • Accommodation of uranium into the garnet structure

    S. V. Yudintsev, M. I. Lapina, A. G. Ptashkin, T. S. Ioudintseva, S. Utsunomiya, L. M. Wang & R. C. Ewing

    Proceedings of the Material Research Society Symposium   2009.10

  • Ion irradiation effects in synthetic garnets incorporating actinides

    S. Utsunomiya, L. M. Wang, S. Yudintsev & R. C. Ewing

    Proceedings of the Material Research Society Symposium   2009.10

  • Radiation-induced decomposition of U(VI) alteration phases of UO2.

    S. Utsunomiya and R. C. Ewing

    Proceedings of the Material Research Society Symposium   2009.10

  • Synthesis, Structure, and Electrochemical Properties of Li4Ti5O12.

    C.V. Ramana, S. Utsunomiya, R.C. Ewing, U. Becker, K. Zaghib & C.M. Julien

    Proceedings of Material Research Society (in press) (Refereed article)   2009.10

  • Alteration coffinite under oxidizing and reducing conditions

    A. Deditius, S. Utsunomiya, R. C. Ewing

    Proceedings of Material Research Society   2009.10

▼display all

Professional Memberships

  • Geochemical Society

  • Mineralogical Society of America

  • 日本原子力学会

  • 日本鉱物科学会

  • 日本地球化学会

Committee Memberships

  • 日本学術会議地球惑星科学委員会地球惑星科学国際連携分科会   IMA小委員会委員   Domestic

    2018.1 - 2020.9   

  • Geochemical Society   C. C. Patterson Award   Foreign country

    2017.7 - 2020.6   

Academic Activities

  • "Minerals" Special Issue "Minerals Down to the Nanoscale: A Glimpse at Ore-Forming Processes" International contribution

    2019.1 - 2019.5

    　More details

    Type：Academic society, research group, etc. 

  • Session Chair International contribution

    Goldschmidt2018  （ Boston UnitedStatesofAmerica ） 2018.8

    　More details

    Type：Competition, symposium, etc. 

  • Frontiers in Energy International contribution

    2016.6 - 2020.6

    　More details

    Type：Academic society, research group, etc. 

  • Elements International contribution

    2015.9 - 2016.9

    　More details

    Type：Academic society, research group, etc. 

  • 座長（Chairmanship） International contribution

    Workshop “Transformation of Radionuclides by Microorganisms, Clays, Plants: Implication for Migration and Remediation”  （ Japan Atomic Energy Agency, Tokai, Ibaraki Japan ） 2012.3

    　More details

    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    Migration2011  （ Peking China ） 2011.9 - 2012.9

    　More details

    Type：Competition, symposium, etc. 

  • 座長（Chairmanship） International contribution

    Goldschmidt Conference  （ Knoxville UnitedStatesofAmerica ） 2009.6 - 2012.6

    　More details

    Type：Competition, symposium, etc. 

▼display all

Research Projects

  • Development of novel microscopy system integrating scanning electron microscopy and radiation measurement

    Grant number：24K22345  2024.6 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    山崎 信哉, 宇都宮 聡

    　 More details

    Grant type：Scientific research funding

    福島原発事故により、放射性セシウムを高濃度に含む放射性微粒子(CsMP)が環境に放出された。CsMPは、環境影響や生体影響、事故時の炉内状況推測などの点で重要な物質である。しかし、粒子径が小さいため（数ミクロン）、単離するには走査型電子顕微鏡(SEM)と放射線計測を相補的に行う必要があり、時間と手間の点で研究のボトルネックとなっている。そこで、本研究ではCsMPのような粒子単離を効率化するために、本研究ではSEMとGe半導体検出器による放射線計測を同時にできる新たな装置の開発を目指す。

    CiNii Research

  • 坑水処理へのマンガン酸化菌関与の可能性に関する研究

    2017.10 - 2019.3

    Joint research

    　 More details

    Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid)  Grant type：Other funds from industry-academia collaboration

  • ラジウムの環境地球科学：野外調査とイオンの系統性からのアプローチ

    2017.4 - 2018.3

    Joint research

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Other funds from industry-academia collaboration

  • 放射性核種を含有する人為起源エアロゾルの新規生成機構の解明

    Grant number：17K19086  2017 - 2018

    Grants-in-Aid for Scientific Research  Grant-in-Aid for challenging Exploratory Research

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 三菱財団自然科学研究助成／福島第一原発由来高濃度放射性セシウム含有微粒子の寄与率とその毒性に関する研究

    2017

    　 More details

    Grant type：Donation

  • 放射性核種移行挙動に対する微生物影響因子の分子科学的研究

    Grant number：16H04634  2016 - 2019

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 最先端電子顕微鏡法を駆使した福島原発由来Cs粒子の生成過程・移行挙動の解明

    Grant number：16K12585  2016 - 2018

    Grants-in-Aid for Scientific Research  Grant-in-Aid for challenging Exploratory Research

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • ヨウ素の化学状態に基づく廃炉及びDOEサイトの修復に向けた廃棄物安定化処理法の開発

    2016 - 2018

    英知を結集した原子力科学技術・人材育成推進事業廃炉加速化プログラム 日米原子力共同研究

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 後期始生代-初期原生代の大気二酸化炭素・酸素濃度とその地球表層環境への影響

    Grant number：15K05338  2015 - 2017

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 飽和堆積層中放射性セシウムの中期的化学形態に関する研究

    2014.9 - 2015.1

    Joint research

    　 More details

    Authorship：Principal investigator  Grant type：Other funds from industry-academia collaboration

  • ロシアにおける放射性核種の地下水の挙動解析と拡散予測シミュレーションモデルの構築

    Grant number：26257402  2014 - 2017

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 環境中放射性核種浄化のための新規な修復材料の開発

    2014 - 2016

    国家課題対応型研究開発推進事業 原子力基礎基盤戦略研究イニシアティブ 日英原子力共同研究プログラム

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 原子力発電所事故により降下した放射性核種の易動性化学状態生成と環境挙動の解明

    Grant number：25289355  2013 - 2016

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 微量元素をプロキシとした初期原生代の大気酸素上昇パターン解明

    Grant number：24340132  2012 - 2014

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • 多様なセシウム汚染廃棄物の中間・最終処分安全評価のための機関連携による多角的研究

    2012 - 2014

    英知を結集した原子力科学技術・人材育成推進事業 原子力基礎基盤戦略研究イニシアティブ

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 低酸素分圧下における風化過程の解明

    2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • EXPLORATION OF NEW BIOLOGICAL SPECIFIC FUNCTION　BY HEAVY ELEMENTS STIMULUS

    2011 - 2012

    日本原子力研究機構　黎明研究

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • 微生物およびナノ粒子が地下水中での放射性核種の拡散に与える影響

    2011 - 2012

    日本学術振興会　二国間交流事業　共同研究

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Contract research

  • エスペック地球環境研究・技術基金／福島土壌汚染改良のための土壌中セシウム化学状態顕微解析

    2011

    　 More details

    Grant type：Donation

  • 鉄鋼環境基金環境研究助成金／集束イオンビームと原子分解能電子顕微鏡を用いたＮｉ含有粒子のピンポイント精密解析

    2011

    　 More details

    Grant type：Donation

  • 無機物質、微生物を媒介とした核種移行ナノプロセスの解明

    2010 - 2012

    放射性廃棄物重要基礎技術研究調査

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 極低酸素環境下での風化：大気酸素上昇パターンの定量化

    2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • バイオ技術を用いたナノコロイド生成と放射性核種との動的相互作用機構の解明

    2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    　 More details

    Authorship：Coinvestigator(s)  Grant type：Scientific research funding

  • マルチサイズ解析による東アジアにおける大気中超微粒子（UFP）の動態に関する研究

    2009 - 2010

    環境省環境研究総合推進費

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

  • 微生物による重元素の鉱物化機構の解明

    2008.12 - 2010.3

    　 More details

    Grant type：Other funds from industry-academia collaboration

  • 黄鉄鉱中に存在する重金属元素のナノ・原子レベル解析

    2008 - 2009

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (Start-up)

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • 鉄鋼業環境保全技術開発基金研究助成／高分解能電子顕微鏡Zコントラスト法と放射光X線吸収分析を用いた大気中に微量に含まれる有害金属微粒子のキャラクタライゼーション

    2008

    　 More details

    Grant type：Donation

  • 微生物による燃料デブリの劣化溶解促進作用の解明研究

    Grant number：19H02647 

    大貫 敏彦, 劉 江, 宇都宮 聡, 高野 公秀, 田中 万也, 香西 直文, 西口 規彦

    　 More details

    Grant type：Scientific research funding

    福島第一原子力発電所(1F)の事故により、溶融燃料とコンクリートとの反応（MCCI）生成物を対象として、MCCI生成物の微生物による劣化機構を明らかにすることを最終目的とする。そのため、SiO2、ZrO2などが溶融・固化したMCCI生成物と同様のマトリックス構造を有する模擬体デブリを微生物と共に培養液中に添加し、各元素の溶出濃度変化を調べる。さらに、模擬デブリのマトリックス構造の変化や損傷や漏出するU等元素の化学状態を電子顕微鏡、放射光分析により明らかにする。結果に基づき、MCCI生成物の微生物により劣化し易いマトリックスを明らかにし、マトリックスの劣化によるUなどの漏出機構を解明する。

    CiNii Research

▼display all

Class subject

  • 分析化学特論ⅠB

    2024.12 - 2025.2   Winter quarter

  • Advanced Analytical Chemistry IB

    2024.12 - 2025.2   Winter quarter

  • 分析化学特論ⅠA

    2024.10 - 2024.12   Fall quarter

  • Advanced Analytical Chemistry IA

    2024.10 - 2024.12   Fall quarter

  • 現代化学

    2024.4 - 2024.9   First semester

  • 放射化学

    2024.4 - 2024.9   First semester

  • 分析化学実験

    2023.10 - 2024.3   Second semester

  • 分析化学Ⅳ

    2023.10 - 2024.3   Second semester

  • 現代化学

    2023.4 - 2023.9   First semester

  • 放射化学

    2023.4 - 2023.9   First semester

  • 国際科学特論Ⅳ

    2022.12 - 2023.2   Winter quarter

  • Advanced Analytical Chemistry ⅠB

    2022.12 - 2023.2   Winter quarter

  • 分析化学特論ⅠB

    2022.12 - 2023.2   Winter quarter

  • 分析化学Ⅳ

    2022.10 - 2023.3   Second semester

  • 分析化学特論ⅠA

    2022.10 - 2022.12   Fall quarter

  • Advanced Analytical Chemistry ⅠA

    2022.10 - 2022.12   Fall quarter

  • 化学特別講義Ⅰ

    2022.4 - 2023.3   Full year

  • 現代化学

    2022.4 - 2022.9   First semester

  • 放射化学

    2022.4 - 2022.9   First semester

  • 分析化学実験

    2022.4 - 2022.9   First semester

  • 分析化学Ⅳ

    2021.10 - 2022.3   Second semester

  • 現代化学

    2021.4 - 2021.9   First semester

  • 放射化学

    2021.4 - 2021.9   First semester

  • 分析化学Ⅳ

    2020.10 - 2021.3   Second semester

  • Advanced Analytical Chemistry Ⅰ

    2020.10 - 2021.3   Second semester

  • 分析化学特論Ⅰ

    2020.10 - 2021.3   Second semester

  • 現代化学

    2020.4 - 2020.9   First semester

  • 放射化学

    2020.4 - 2020.9   First semester

  • 分析化学Ⅳ

    2019.10 - 2020.3   Second semester

  • 化学特別講義Ⅴ

    2019.4 - 2020.3   Full year

  • 現代化学

    2019.4 - 2019.9   First semester

  • 放射化学

    2019.4 - 2019.9   First semester

  • 放射化学

    2019.4 - 2019.9   First semester

  • 分析化学特論I

    2018.10 - 2019.3   Second semester

  • 分析化学IV

    2018.10 - 2019.3   Second semester

  • 分析化学実験

    2018.10 - 2019.3   Second semester

  • Advanced Analytical Chemistry Ⅰ

    2018.10 - 2019.3   Second semester

  • 放射化学

    2018.4 - 2018.9   First semester

  • 現代化学

    2018.4 - 2018.9   First semester

  • 分析化学実験

    2017.10 - 2018.3   Second semester

  • 分析化学IV

    2017.10 - 2018.3   Second semester

  • 現代化学

    2017.4 - 2017.9   First semester

  • 放射化学

    2017.4 - 2017.9   First semester

  • 分析化学実験

    2016.10 - 2017.3   Second semester

  • 分析化学IV

    2016.10 - 2017.3   Second semester

  • 分析化学特論I

    2016.10 - 2017.3   Second semester

  • 現代化学

    2016.4 - 2016.9   First semester

  • 放射化学

    2016.4 - 2016.9   First semester

  • 自然科学総合実験

    2013.10 - 2014.3   Second semester

  • 無機化学実験

    2013.10 - 2014.3   Second semester

  • 放射化学I

    2013.10 - 2014.3   Second semester

  • 無機化学特論

    2012.10 - 2013.3   Second semester

  • 自然科学総合実験

    2011.10 - 2012.3   Second semester

  • 放射化学I

    2011.10 - 2012.3   Second semester

  • 無機化学実験

    2011.10 - 2012.3   Second semester

  • 無機化学特論

    2010.10 - 2011.3   Second semester

  • 自然科学総合実験

    2010.10 - 2011.3   Second semester

  • 無機化学実験

    2010.10 - 2011.3   Second semester

  • 放射化学I

    2010.10 - 2011.3   Second semester

  • 無機化学実験

    2009.10 - 2010.3   Second semester

  • 放射化学Ｉ

    2009.10 - 2010.3   Second semester

  • 自然科学総合実験

    2009.4 - 2009.9   First semester

  • 自然科学総合実験

    2008.10 - 2009.3   Second semester

  • 放射化学Ⅰ

    2008.10 - 2009.3   Second semester

  • 無機化学特論

    2008.10 - 2009.3   Second semester

  • 無機物質化学

    2008.4 - 2008.9   First semester

  • 無機物質化学

    2007.4 - 2007.9   First semester

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FD Participation

  • 2008.5   Role：Participation   Title：化学部門　GPA制度について

    Organizer：Undergraduate school department

Visiting, concurrent, or part-time lecturers at other universities, institutions, etc.

  • 2015  福岡女子大  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：3日間

  • 2014  福岡女子大  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：3日間

  • 2012  北海道大学・工学部　　文部科学省原子力人材育成事業　中級コース講師  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：１コマ

  • 2011  北海道大学・工学部　　文部科学省原子力人材育成事業　中級コース講師  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：１コマ

  • 2009  福岡女子大  Classification:Intensive course  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：2日間

Outline of Social Contribution and International Cooperation activities

  • 海外２２拠点との共同研究実績を持ち、現在でも密接なネットワークを保っている。
    社会貢献では、談話会担当として特別談話会の開催等で、化学教室の社会へのアピールをしている。

Media Coverage

  • Radioactive Glass Beads May Tell the Terrible Tale of How the Fukushima Meltdown Unfolded

    Scientific American  2019.3

    　More details

    Radioactive Glass Beads May Tell the Terrible Tale of How the Fukushima Meltdown Unfolded

  • ゴールドシュミット国際会議のプレス発表に選ばれた。 First reliable estimates of highly radioactive cesium-rich microparticles released by Fukushima disaster

    Goldschmidt conference press release  2018.8

    　More details

    ゴールドシュミット国際会議のプレス発表に選ばれた。
    First reliable estimates of highly radioactive cesium-rich microparticles released by Fukushima disaster

  • セシウムボールの定量法を開発 Newspaper, magazine

    しんぶん赤旗  2018.6

    　More details

    セシウムボールの定量法を開発

  • 3.11から７年　初めて福島第⼀原発由来のウラン酸化物が発⾒された

    Yahoo ニュース  2018.6

    　More details

    3.11から７年　初めて福島第⼀原発由来のウラン酸化物が発⾒された

  • 核燃料微粒子を発見 Newspaper, magazine

    しんぶん赤旗  2018.3

    　More details

    核燃料微粒子を発見

  • 核燃料由来微粒子を発見 Newspaper, magazine

    日経産業新聞  2018.3

    　More details

    核燃料由来微粒子を発見

  • 核燃料由来の微粒子を発見 Newspaper, magazine

    中日新聞  2018.3

    　More details

    核燃料由来の微粒子を発見

  • 未知の放射性微粒子を追え　冒頭部 TV or radio program

    NHK　クローズアップ現代＋  2017.6

    　More details

    未知の放射性微粒子を追え　冒頭部

  • セシウム分析事故実態迫る Newspaper, magazine

    福島民友新聞  2016.9

    　More details

    セシウム分析事故実態迫る

  • 福島第一のセシウム、コンクリートと反応か　九大などの研究

    朝日新聞デジタル  2016.6

    　More details

    福島第一のセシウム、コンクリートと反応か　九大などの研究

  • セシウム89％はガラス粒子

    共同通信47  2016.6

    　More details

    セシウム89％はガラス粒子

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Acceptance of Foreign Researchers, etc.

  • University of Adelaide

    Acceptance period： 2012.8   （Period）：Less than 2 weeks

    Nationality：Australia

  • University of Adelaide

    Acceptance period： 2011.1   （Period）：Less than 2 weeks

    Nationality：Australia

Travel Abroad

  • 2000.9 - 2007.4

    Staying countory name 1：United States   Staying institution name 1：University of Michigan