Updated on 2025/07/19

Information

 

写真a

 
ITO AKANE
 
Organization
Faculty of Engineering Department of Earth Resources Engineering Assistant Professor
Faculty of Engineering Research Center for Environmental Engineering（Concurrent）
School of Engineering （Concurrent）
Graduate School of Engineering Department of Earth Resources Engineering（Concurrent）
Title
Assistant Professor
Contact information
メールアドレス
Profile
研究活動 資源地質学・環境地質学・同位体地球化学を専門とし, 金属鉱床形成および坑廃水中での元素の移動・濃集プロセスを地球化学的な観点から明らかにすることを目指して研究を行なっている． 教育活動 基幹教育においては基幹教育セミナー, 学部専攻教育では, フィールド地球科学演習, 地球システム工学実習等の演習及び講義を担当している. また, 博士課程・環境システム工学特別コースのオムニバス講義も担当している. 研究室に配属された学生に対しては野外調査, 化学分析および卒修論執筆について教育指導を行っている.
Homepage
External link

Degree

  • Hokkaido University, Japan

  • Ph.D. Engineering

Research History

  • Kyushu University Faculty of Engineering Assistant Professor 

    2022.7 - Present

    　 More details

  • Kwansei Gakuin University School of Biological and Environmental Sciences Department of Applied Chemistry for Environment  

    2019.4 - 2022.6

    　 More details

  • 2019-2022年6月：関西学院大学　生命環境学部　助教   

Research Interests・Research Keywords

  • Research theme： ・Development of a rapid method for simultaneous determination of chromium species ・Investigation of the variation in heavy metal isotopes in the surface environment and evaluation of as redox proxy ・Geochemical behavior of trace elements in the estuarine environment ・Rare metal enrichment in laterite deposits and development of geochemical indicator for exploration ・Environmental assessment for heavy mineral processing using geochemical and isotopic signatures ・The attenuation processes of toxic elements during the formation of Fe colloid in passive treatment

    Keyword： rare metal, weathering, environmental assessment, stable isotope, geochemical reaction modeling

    Research period： 2022.7

Awards

  • Top Downloaded Article

    2023.3   Wiley for Resource Geology  

  • Top Downloaded Article

    2023.3   Wiley for Resource Geology  

    　More details

  • Best Article Award

    2022.6   Society of Resource Geology  

  • Best Article Award

    2022.6   Society of Resource Geology  

    　More details

Papers

  • Rapid determination of chromium species in environmental waters using a diol-bonded polymer-stationary column under water-rich conditions coupled with ICPMS Reviewed International journal

    @Ito A., Morishita Y., Morimoto T., and Tanimizu M.

    Analytical Sciences   40 ( 3 )   359 - 366   2024.1   （ ISSN:0910-6340 eISSN:1348-2246 ）

    　More details

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

    Chromium speciation analysis in environmental water is of great significance for the monitoring of water pollution and assessing its influences on human health. This study proposes a rapid analytical approach for the simultaneous determination of Cr(VI) and Cr(III) in environmental waters by hydrophilic interaction chromatography (HILIC) coupled with ICPMS under a water-rich condition. 2,6-Pyridinedicarboxylic acid (PDCA) was used to unify Cr(III) species in various chemical forms into a stable Cr(III)–PDCA anion complex and then separated from Cr(VI) oxyanion on a diol-bonded polymer-based HILIC column. An aqueous mobile phase containing 50 mmol L<sup>−1</sup> ammonium acetate (pH 7.0), 2 mmol L<sup>−1</sup> PDCA, and 4% acetonitrile successfully separates chromium species as well as chloride ions. In addition, our method elutes Cr(VI) preferentially over Cr(III)–PDCA, enabling rapid determination of Cr(VI), and both chromium species were analyzed within 6.2 min. The detection limits of 0.19 μg L<sup>−1</sup> for Cr(VI) and 0.35 μg L<sup>−1</sup> for Cr(III) at m/z 52 under He collision mode are comparable to or better than the conventional ion exchange chromatography–ICPMS methods, and quantitative recovery was obtained from spike-recovery tests on river water samples containing various levels of matrix. Optimization experiments of the HPLC conditions indicate that the retentions of Cr(VI) and Cr(III)–PDCA are characterized by electrostatic and nonpolar interactions, respectively. The retention behavior of inorganic anions and cations in water-rich conditions observed in this study will provide new insights into the separation mechanism in polymer-based HILIC columns, which has been poorly understood. Graphical abstract: (Figure presented.)

    DOI： 10.1007/s44211-023-00475-6

    Web of Science

    Scopus

    PubMed

    Repository Public URL： https://hdl.handle.net/2324/7177955

  • Simple and Rapid HPLC-ICP-MS Method for the Simultaneous Determination of Cr(III) and Cr(VI) by Combining a 2,6-Pyridinedicarboxylic Acid Pre-Complexation Treatment Reviewed

    Ito A., Isamoto K., Morishita Y., and Tanimizu M.

    Mass Spectrometry   13 ( 1 )   2024

    　More details

    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.5702/massspectrometry.A0161

  • Simultaneous and sensitive analysis of glyphosate, glufosinate, and their metabolites in surface water by HPLC-ICP-MS/MS Reviewed International journal

    Takahiro Morimoto, @Akane Ito, Masaharu Tanimizu.

    Analytical Sciences   39   1047 - 1052   2023.7

    　More details

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

    DOI： https://doi.org/10.1007/s44211-023-00346-0

    Repository Public URL： https://hdl.handle.net/2324/7177956

  • Simultaneous and sensitive analysis of glyphosate, glufosinate, and their metabolites in surface water by HPLC-ICP-MS/MS Reviewed International journal

    Takahiro Morimoto, Akane Ito, Masaharu Tanimizu.

    Analytical Science   39 ( 7 )   1047 - 1052   2023.7   （ ISSN:0910-6340 eISSN:1348-2246 ）

    　More details

    Language：English   Publisher：Analytical Sciences  

    Organophosphorus pesticides such as glyphosate and glufosinate are used worldwide, and environmental regulatory values are being adopted in many countries due to their potential toxicity. In the present work, a pretreatment-free analytical method is established in which these two compounds with their metabolites are isolated from each other by anion-exchange HPLC using ammonium acetate (70 mM, pH 3.7) as eluent, and they are detected by triple quadrupole ICP-MS. Very low detection limits of 0.03–0.17 μg L<sup>−1</sup> are acquired through the detection of P<sup>+</sup> as PO<sup>+</sup> via oxygen reaction mode, and quantitative recovery was obtained from the spike-recovery test on river water samples containing phosphate ion as an isobaric interferent. In addition, a constant sensitivity per molar concentration was achieved regardless of the compounds due to the powerful ion source of ICP-MS. This property suggests that semi-quantitative analysis of unknown P-bearing compounds is possible from one calibration curve. Graphical abstract: [Figure not available: see fulltext.]

    DOI： 10.1007/s44211-023-00346-0

    Web of Science

    Scopus

    PubMed

    researchmap

  • Lithium isotope systematics of Arima hot spring waters and groundwaters in Kii Peninsula Invited Reviewed International journal

    R. Umam, M. Tanimizu, H. Nakamura, Y. Nishio, R. Nakai, N. Sugimoto, Y. Mori, Y. Kobayashi, @A. Ito, S. Wakaki, K. Nagaishi, and T. Ishikawa

    Geochemical Journal   11 ( 5 )   8 - 17   2022.6

    　More details

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

  • Lithium isotope systematics of Arima hot spring waters and groundwaters in Kii Peninsula Invited Reviewed International journal

    R. Umam, M. Tanimizu, H. Nakamura, Y. Nishio, R. Nakai, N. Sugimoto, Y. Mori, Y. Kobayashi, A. Ito, S. Wakaki, K. Nagaishi, and T. Ishikawa

    Geochemical Journal   11 ( 5 )   8 - 17   2022.6

    　More details

    Language：English  

    researchmap

  • Application of B and Li isotope systematics for detecting chemical disturbance in groundwater associated with large shallow inland earthquakes in Kumamoto, Japan Invited Reviewed International journal

    M. Tanimizu, N. Sugimoto, T. Hosono, C. Kuribayashi, T. Morimoto, @A. Ito, R. Umam, Y. Nishio, K. Nagaishi, T. Ishikawa

    Geochemical Journal   55 ( 4 )   241 - 250   2021.11

    　More details

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

  • Geochemical constraints on the mobilization of Ni and critical metals in laterite deposits, Sulawesi, Indonesia: A mass‐balance approach

    @Akane Ito, Tsubasa Otake, Adi Maulana, Kenzo Sanematsu, Sufriadin, Tsutomu Sato

    Resource Geology   71 ( 3 )   255 - 282   2021.7

    　More details

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

    DOI： 10.1111/rge.12266

    Repository Public URL： https://hdl.handle.net/2324/7177960

  • The formation of Fe colloids and layered double hydroxides as sequestration agents in the natural remediation of mine drainage

    Frances Chikanda, Tsubasa Otake, Aoi Koide, @Akane Ito, Tsutomu Sato

    Science of The Total Environment   774   145183 - 145183   2021.6

    　More details

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

    DOI： 10.1016/j.scitotenv.2021.145183

    Repository Public URL： https://hdl.handle.net/2324/7173533

  • Large Fe isotope fractionations in sulfide ores and ferruginous sedimentary rocks from the Kuroko volcanogenic massive sulfide deposits in the Hokuroku district, northeast Japan

    Tsubasa Otake, Ryoichi Yamada, Ryohei Suzuki, Shunsuke Nakamura, @Akane Ito, Ki-Cheol Shin, Tsutomu Sato

    Geochimica et Cosmochimica Acta   295   49 - 64   2021.2

    　More details

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

    DOI： 10.1016/j.gca.2020.12.009

    Repository Public URL： https://hdl.handle.net/2324/7177959

  • Chromium occurrence in a nickel laterite profile and its implications to surrounding surface waters Invited Reviewed International journal

    Delina, Ruth Esther; Arcilla, Carlo; Otake, Tsubasa; Garcia, Jhonard John; Tan, Mark; @Ito, Akane

    CHEMICAL GEOLOGY   558   2020.12

    　More details

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

    DOI： 10.1016/j.chemgeo.2020.119863

  • Chromium occurrence in a nickel laterite profile and its implications to surrounding surface waters Reviewed

    Ruth Esther Delina, Carlo Arcilla, Tsubasa Otake, Jhonard John Garcia, Mark Tan, @Akane Ito

    Chemical Geology   558   119863 - 119863   2020.12

    　More details

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

    DOI： 10.1016/j.chemgeo.2020.119863

  • Magmatic-Hydrothermal Processes Associated with Rare Earth Element Enrichment in the Kangankunde Carbonatite Complex, Malawi Invited Reviewed International journal

    Chikanda, Frances; Otake, Tsubasa; Ohtomo, Yoko; @Ito, Akane; Yokoyama, Takaomi D.; Sato, Tsutomu

    MINERALS   9 ( 7 )   2019.7

    　More details

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

    DOI： 10.3390/min9070442

    Repository Public URL： https://hdl.handle.net/2324/7177958

  • Magmatic-Hydrothermal Processes Associated with Rare Earth Element Enrichment in the Kangankunde Carbonatite Complex, Malawi Reviewed

    Frances Chikanda, Tsubasa Otake, Yoko Ohtomo, Akane Ito, Takaomi D. Yokoyama, Tsutomu Sato

    Minerals   9 ( 7 )   442 - 442   2019.7

    　More details

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

    Carbonatites undergo various magmatic-hydrothermal processes during their evolution that are important for the enrichment of rare earth elements (REE). This geochemical, petrographic, and multi-isotope study on the Kangankunde carbonatite, the largest light REE resource in the Chilwa Alkaline Province in Malawi, clarifies the critical stages of REE mineralization in this deposit. The δ56Fe values of most of the carbonatite lies within the magmatic field despite variations in the proportions of monazite, ankerite, and ferroan dolomite. Exsolution of a hydrothermal fluid from the carbonatite melts is evident based on the higher δ56Fe of the fenites, as well as the textural and compositional zoning in monazite. Field and petrographic observations, combined with geochemical data (REE patterns, and Fe, C, and O isotopes), suggest that the key stage of REE mineralization in the Kangankunde carbonatite was the late magmatic stage with an influence of carbothermal fluids i.e. magmatic–hydrothermal stage, when large (~200 µm), well-developed monazite crystals grew. The C and O isotope compositions of the carbonatite suggest a post-magmatic alteration by hydrothermal fluids, probably after the main REE mineralization stage, as the alteration occurs throughout the carbonatite but particularly in the dark carbonatites.

    DOI： 10.3390/min9070442

  • Geochemical study of ultramafic rocks from Latowu area of North Kolaka, Southeast Sulawesi and its implication for CO2 sequestration Reviewed

    S Sufriadin, Sri Widodo, Akane Ito, Tsubasa Otake, Kenzo Sanematsu

    Journal of Degraded and Mining Lands Management   5 ( 4 )   1403 - 1408   2018.7

    　More details

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

    DOI： 10.15243/jdmlm.2018.054.1403

  • Geochemical signatures and processes in a stream contaminated by heavy mineral processing near Ipoh city, Malaysia Reviewed

    Akane Ito, Tsubasa Otake, Ki-Cheol Shin, Kamar Shah Ariffin, Fei-Yee Yeoh, Tsutomu Sato

    Applied Geochemistry   82   89 - 101   2017.7

    　More details

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

    DOI： 10.1016/j.apgeochem.2017.05.007

    Repository Public URL： https://hdl.handle.net/2324/7177957

  • Cerium removal by activated carbon derived from palm kernel shell Reviewed

    Chee Heong Ooi, Akane Ito, Tsubasa Otake, Fei Yee Yeoh

    Advanced Materials Letters   8 ( 2 )   145 - 149   2016.12

    　More details

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

    DOI： 10.5185/amlett.2017.7061

  • Risk stratification of net adverse clinical events using CHADS-P<sub>2</sub>A<sub>2</sub>RC and CHADS<sub>2</sub> scores in chronic coronary syndrome patients without atrial fibrillation: Insights from the CLIDAS-PCI

    Shimada, T; Fukuda, D; Shibata, A; Ito, A; Otsuka, K; Okamura, H; Matoba, T; Kohro, T; Oba, Y; Kabutoya, T; Imai, Y; Kario, K; Kiyosue, A; Mizuno, Y; Nochioka, K; Nakayama, M; Iwai, T; Miyamoto, Y; Ishii, M; Nakamura, T; Tsujita, K; Sato, H; Akashi, N; Fujita, H; Nagai, R; CLIDAS Res Grp

    INTERNATIONAL JOURNAL OF CARDIOLOGY   437   133464   2025.10   （ ISSN:0167-5273 eISSN:1874-1754 ）

    　More details

  • Novel Cell-to-Cell Communications Between Macrophages and Fibroblasts Regulate Obesity-Induced Adipose Tissue Fibrosis

    Kohda, H; Tanaka, M; Shichino, S; Arakawa, S; Komori, T; Ito, A; Wada, E; Ochi, K; Yuan, XM; Takeda, T; Saiki, A; Tatsuno, I; Ikeda, K; Miyai, Y; Enomoto, A; Morikawa, Y; Shimizu, S; Ueha, S; Matsushima, K; Ogawa, Y; Suganami, T

    DIABETES   74 ( 7 )   1135 - 1152   2025.7   （ ISSN:0012-1797 eISSN:1939-327X ）

    　More details

  • Fludarabine Plus Myeloablative Dose of Busulfan Regimen Was Associated with High Nonrelapse Mortality in Allogeneic Hematopoietic Stem Cell Transplantation for Malignant Lymphoma: A Propensity Score-Matched Comparison Study with Fludarabine Plus High-Dose Melphalan

    Shinohara, A; Shindo, M; Yamasaki, S; Kato, K; Yoshihara, S; Yamamoto, G; Kataoka, K; Ikeda, T; Kobayashi, H; Serizawa, K; Mori, Y; Takayama, N; Nakazawa, H; Ito, A; Katayama, Y; Kanda, Y; Yoshimitsu, M; Fukuda, T; Atsuta, Y; Kondo, E

    TRANSPLANTATION AND CELLULAR THERAPY   31 ( 6 )   382e1 - 382e17   2025.6   （ ISSN:2666-6375 eISSN:2666-6367 ）

    　More details

  • Venetoclax treatment for chronic lymphocytic leukemia/small lymphocytic leukemia in Japan: post-marketing surveillance (vol 120, pg 613, 2024)

    Ito, T; Kamimura, T; Kiguchi, T; Kato, K; Takenaka, R; Kobayashi, M; Ito, A; Sakai, M; Izutsu, K

    INTERNATIONAL JOURNAL OF HEMATOLOGY   121 ( 6 )   872 - 872   2025.6   （ ISSN:0925-5710 eISSN:1865-3774 ）

    　More details

  • Adjunct Therapy with Ipragliflozin Exerts Limited Effects on Kidney Protection in Type 1 Diabetes: A Retrospective Study Conducted at 25 Centers in Japan (IPRA-CKD)

    Nakamura, Y; Horie, I; Yano, H; Nomoto, H; Fukui, T; Yuyama, Y; Kawamura, T; Ueda, M; Yamamoto, A; Hirota, Y; Kusunoki, Y; Nishida, K; Sekiguchi, D; Maeda, Y; Minami, M; Nagayama, A; Iwata, S; Minagawa, H; Furukawa, S; Miyake, T; Ueno, H; Chinen, R; Nakayama, Y; Masuzaki, H; Miyachi, Y; Okada, Y; Okamoto, M; Ono, K; Tanaka, KI; Kurozumi, A; Sakai, T; Yamasaki, H; Yasui, JI; Ito, A; Kawakami, A; Abiru, N; IPRA-CKD Study Grp

    BIOMEDICINES   13 ( 6 )   2025.5   （ ISSN:2227-9059 eISSN:2227-9059 ）

    　More details

  • Significant detrimental impact of pre-transplant mogamulizumab on the post-transplant outcome with a short interval between the last mogamulizumab and transplantation

    Fuji, S; Tokunaga, M; Kato, K; Nakano, N; Shindo, T; Makiyama, J; Itonaga, H; Ito, A; Eto, T; Ishikawa, J; Hasegawa, Y; Ishitsuka, K; Moriuchi, Y; Ota, S; Mori, Y; Suehiro, Y; Takase, K; Kanda, Y; Onizuka, M; Fukuda, T; Atsuta, Y; Yoshimitsu, M

    BONE MARROW TRANSPLANTATION   60 ( 4 )   552 - 554   2025.4   （ ISSN:0268-3369 eISSN:1476-5365 ）

    　More details

  • Infrared bubble recognition in the Milky Way and beyond using deep learning

    Nishimoto, S; Onishi, T; Nishimura, A; Fujita, S; Kawanishi, Y; Nakatani, S; Tokuda, K; Shimajiri, Y; Kaneko, H; Miyamoto, Y; Inoue, T; Ito, AM

    PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN   77 ( 2 )   403 - 424   2025.4   （ ISSN:0004-6264 eISSN:2053-051X ）

    　More details

  • Comparative outcomes of various transplantation platforms, highlighting haploidentical transplants with post-transplantation cyclophosphamide for adult T-cell leukaemia/lymphoma

    Yoshimitsu, M; Tanaka, T; Nakano, N; Kato, K; Muranushi, H; Tokunaga, M; Ito, A; Ishikawa, J; Eto, T; Morishima, S; Kawakita, T; Itonaga, H; Uchida, N; Tanaka, M; Akizuki, K; Ishitsuka, K; Ohigashi, H; Ota, S; Ando, T; Kanda, Y; Fukuda, T; Atsuta, Y; Fuji, S; Japanese Soc Transplantation Cellular Therapy

    BRITISH JOURNAL OF HAEMATOLOGY   206 ( 1 )   235 - 249   2025.1   （ ISSN:0007-1048 eISSN:1365-2141 ）

    　More details

  • Blood DNA virome associates with autoimmune diseases and COVID-19

    Sasa, N; Kojima, S; Koide, R; Hasegawa, T; Namkoong, H; Hirota, T; Watanabe, R; Nakamura, Y; Oguro-Igashira, E; Ogawa, K; Yata, T; Sonehara, K; Yamamoto, K; Kishikawa, T; Sakaue, S; Edahiro, R; Shirai, Y; Maeda, Y; Nii, T; Chubachi, S; Tanaka, H; Yabukami, H; Suzuki, A; Nakajima, K; Arase, N; Okamoto, T; Nishikawa, R; Namba, S; Naito, T; Miyagawa, I; Tanaka, H; Ueno, M; Ishitsuka, Y; Furuta, J; Kunimoto, K; Kajihara, I; Fukushima, S; Miyachi, H; Matsue, H; Kamata, M; Momose, M; Bito, T; Nagai, H; Ikeda, T; Horikawa, T; Adachi, A; Matsubara, T; Ikumi, K; Nishida, E; Nakagawa, I; Yagita-Sakamaki, M; Yoshimura, M; Ohshima, S; Kinoshita, M; Ito, S; Arai, T; Hirose, M; Tanino, Y; Nikaido, T; Ichiwata, T; Ohkouchi, S; Hirano, T; Takada, T; Tazawa, R; Morimoto, K; Takaki, M; Konno, S; Suzuki, M; Tomii, K; Nakagawa, A; Handa, T; Tanizawa, K; Ishii, H; Ishida, M; Kato, T; Takeda, N; Yokomura, K; Matsui, T; Uchida, A; Inoue, H; Imaizumi, K; Goto, Y; Kida, H; Fujisawa, T; Suda, T; Yamada, T; Satake, Y; Ibata, H; Saigusa, M; Shirai, T; Hizawa, N; Nakata, K; Imafuku, S; Tada, Y; Asano, Y; Sato, S; Nishigori, C; Jinnin, M; Ihn, H; Asahina, A; Saeki, H; Kawamura, T; Shimada, S; Katayama, I; Poisner, HM; Mack, TM; Bick, AG; Higasa, K; Okuno, T; Mochizuki, H; Ishii, M; Koike, R; Kimura, A; Noguchi, E; Sano, S; Inohara, H; Fujimoto, M; Inoue, Y; Yamaguchi, E; Ogawa, S; Kanai, T; Morita, A; Matsuda, F; Tamari, M; Kumanogoh, A; Tanaka, Y; Ohmura, K; Fukunaga, K; Imoto, S; Miyano, S; Parrish, NF; Okada, Y; Wang, QBS; Lee, H; Saiki, R; Hyugaji, T; Shimizu, E; Katayama, K; Kanai, M; Kato, Y; Morita, T; Takahashi, K; Harada, N; Naito, T; Hiki, M; Matsushita, Y; Takagi, H; Ichikawa, M; Nakamura, A; Harada, S; Sandhu, Y; Kabata, H; Masaki, K; Kamata, H; Ikemura, S; Okamori, S; Terai, H; Morita, A; Asakura, T; Sasaki, J; Morisaki, H; Uwamino, Y; Nanki, K; Uchida, S; Uno, S; Nishimura, T; Ishiguro, T; Isono, T; Shibata, S; Matsui, Y; Hosoda, C; Takano, K; Nishida, T; Kobayashi, Y; Takaku, Y; Takayanagi, N; Ueda, S; Tada, A; Miyawaki, M; Yamamoto, M; Yoshida, E; Hayashi, R; Nagasaka, T; Arai, S; Kaneko, Y; Sasaki, K; Tagaya, E; Kawana, M; Arimura, K; Takahashi, K; Anzai, T; Ito, S; Endo, A; Uchimura, Y; Miyazaki, Y; Honda, T; Tateishi, T; Tohda, S; Ichimura, N; Sonobe, K; Sassa, CT; Nakajima, J; Nakano, Y; Nakajima, Y; Anan, R; Arai, R; Kurihara, Y; Harada, Y; Nishio, K; Ueda, T; Azuma, M; Saito, R; Sado, T; Miyazaki, Y; Sato, R; Haruta, Y; Nagasaki, T; Yasui, Y; Hasegawa, Y; Mutoh, Y; Kimura, T; Sato, T; Takei, R; Hagimoto, S; Noguchi, Y; Yamano, Y; Sasano, H; Ota, S; Nakamori, Y; Yoshiya, K; Saito, F; Yoshihara, T; Wada, D; Iwamura, H; Kanayama, S; Maruyama, S; Yoshiyama, T; Ohta, K; Kokuto, H; Ogata, H; Tanaka, Y; Arakawa, K; Shimoda, M; Osawa, T; Tateno, H; Hase, I; Yoshida, S; Suzuki, S; Kawada, M; Horinouchi, H; Saito, F; Mitamura, K; Hagihara, M; Ochi, J; Uchida, T; Baba, R; Arai, D; Ogura, T; Takahashi, H; Hagiwara, S; Nagao, G; Konishi, S; Nakachi, I; Murakami, K; Yamada, M; Sugiura, H; Sano, H; Matsumoto, S; Kimura, N; Ono, Y; Baba, H; Suzuki, Y; Nakayama, S; Masuzawa, K; Shiroyama, T; Noda, Y; Niitsu, T; Adachi, Y; Enomoto, T; Amiya, S; Hara, R; Yamaguchi, Y; Murakami, T; Kuge, T; Matsumoto, K; Yamamoto, Y; Yamamoto, M; Yoneda, M; Tomono, K; Kato, K; Hirata, H; Takeda, Y; Koh, H; Manabe, T; Funatsu, Y; Ito, F; Fukui, T; Shinozuka, K; Kohashi, S; Miyazaki, M; Shoko, T; Kojima, M; Adachi, T; Ishikawa, M; Takahashi, K; Inoue, T; Hirano, T; Kobayashi, K; Takaoka, H; Watanabe, K; Miyazawa, N; Kimura, Y; Sado, R; Sugimoto, H; Kamiya, A; Kuwahara, N; Fujiwara, A; Matsunaga, T; Sato, Y; Okada, T; Hirai, Y; Kawashima, H; Narita, A; Niwa, K; Sekikawa, Y; Nishi, K; Nishitsuji, M; Tani, M; Suzuki, J; Nakatsumi, H; Ogura, T; Kitamura, H; Hagiwara, E; Murohashi, K; Okabayashi, H; Mochimaru, T; Nukaga, S; Satomi, R; Oyamada, Y; Mori, N; Baba, T; Fukui, Y; Odate, M; Mashimo, S; Makino, Y; Yagi, K; Hashiguchi, M; Kagyo, J; Shiomi, T; Fuke, S; Saito, H; Tsuchida, T; Fujitani, S; Takita, M; Morikawa, D; Yoshida, T; Izumo, T; Inomata, M; Kuse, N; Awano, N; Tone, M; Ito, A; Nakamura, Y; Hoshino, K; Maruyama, J; Ishikura, H; Takata, T; Odani, T; Amishima, M; Hattori, T; Shichinohe, Y; Kagaya, T; Kita, T; Ohta, K; Sakagami, S; Koshida, K; Hayashi, K; Shimizu, T; Kozu, Y; Hiranuma, H; Gon, Y; Izumi, N; Nagata, K; Ueda, K; Taki, R; Hanada, S; Kawamura, K; Ichikado, K; Nishiyama, K; Muranaka, H; Nakamura, K; Hashimoto, N; Wakahara, K; Koji, S; Omote, N; Ando, A; Kodama, N; Kaneyama, Y; Maeda, S; Kuraki, T; Matsumoto, T; Yokote, K; Nakada, TA; Abe, R; Oshima, T; Shimada, T; Harada, M; Takahashi, T; Ono, H; Sakurai, T; Shibusawa, T; Kimizuka, Y; Kawana, A; Sano, T; Watanabe, C; Suematsu, R; Sageshima, H; Yoshifuji, A; Ito, K; Takahashi, S; Ishioka, K; Nakamura, M; Masuda, M; Wakabayashi, A; Watanabe, H; Ueda, S; Nishikawa, M; Chihara, Y; Takeuchi, M; Onoi, K; Shinozuka, J; Sueyoshi, A; Nagasaki, Y; Okamoto, M; Ishihara, S; Shimo, M; Tokunaga, Y; Kusaka, Y; Ohba, T; Isogai, S; Ogawa, A; Inoue, T; Fukuyama, S; Eriguchi, Y; Yonekawa, A; Kan-O, K; Matsumoto, K; Kanaoka, K; Ihara, S; Komuta, K; Inoue, Y; Chiba, S; Yamagata, K; Hiramatsu, Y; Kai, H; Asano, K; Oguma, T; Ito, Y; Hashimoto, S; Yamasaki, M; Kasamatsu, Y; Komase, Y; Hida, N; Tsuburai, T; Oyama, B; Takada, M; Kanda, H; Kitagawa, Y; Fukuta, T; Miyake, T; Yoshida, S; Ogura, S; Abe, S; Kono, Y; Togashi, Y; Takoi, H; Kikuchi, R; Ogawa, S; Ogata, T; Ishihara, S; Kanehiro, A; Ozaki, S; Fuchimoto, Y; Wada, S; Fujimoto, N; Nishiyama, K; Terashima, M; Beppu, S; Yoshida, K; Narumoto, O; Nagai, H; Ooshima, N; Motegi, M; Umeda, A; Miyagawa, K; Shimada, H; Endo, M; Ohira, Y; Watanabe, M; Inoue, S; Igarashi, A; Sato, M; Sagara, H; Tanaka, A; Ohta, S; Kimura, T; Shibata, Y; Minemura, H; Sato, Y; Yamada, Y; Hashino, T; Shinoki, M; Iwagoe, H; Takahashi, H; Fujii, K; Kishi, H; Kanai, M; Imamura, T; Yamashita, T; Yatomi, M; Maeno, T; Hayashi, S; Takahashi, M; Kuramochi, M; Kamimaki, I; Tominaga, Y; Ishii, T; Utsugi, M; Ono, A; Tanaka, T; Kashiwada, T; Fujita, K; Saito, Y; Seike, M; Watanabe, H; Matsuse, H; Kodaka, N; Nakano, C; Oshio, T; Hirouchi, T; Makino, S; Egi, M; Omae, Y; Nannya, Y; Ueno, T; Takano, T; Katayama, K; Ai, M; Sato, T; Hasegawa, N; Tokunaga, K; Kitagawa, Y

    NATURE GENETICS   57 ( 1 )   2025.1   （ ISSN:1061-4036 eISSN:1546-1718 ）

    　More details

  • Large disequilibrium of 234U/238U isotope ratios in deep groundwater and its potential application as a groundwater mixing indicator Reviewed

    Kuribayashi C., Miyakawa K., Ito A., and Tanimizu M.

    Geochemical Journal   59 ( 2 )   35 - 44   2025

    　More details

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

    DOI： 10.2343/geochemj.GJ24028

  • Large disequilibrium of <sup>234</sup>U/<sup>238</sup>U isotope ratios in deep groundwater and its potential application as a groundwater mixing indicator

    Kuribayashi Chika, Miyakawa Kazuya, Ito Akane, Tanimizu Masaharu

    GEOCHEMICAL JOURNAL   59 ( 2 )   35 - 44   2025   （ ISSN:00167002 eISSN:18805973 ）

    　More details

    Language：English   Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    <p><sup>234</sup>U and <sup>238</sup>U are naturally occurring radioisotopes, and the ratio of their decay rates is expressed as activity ratio (<i>AR</i>). <i>AR</i> is an index of the degree of deviation from the secular equilibrium and has been used as a tracer in shallow groundwater systems. This study examined the distribution of <sup>238</sup>U and <sup>234</sup>U in deep groundwater in the northern Hokkaido, Japan, to assess the usefulness of <i>AR</i> as a geochemical indicator in the reducing groundwater. Samples consist of saline groundwater derived from seawater at the time of deposition of the strata, and meteoric water infiltrated during the glacial period before about 12,000 years ago. The results showed that <i>AR</i> increased in the sampling depths of 350 < 160 < 250 meters up to ~11 depending on the percentage of meteoric water infiltration, and positively correlated with inverses of uranium concentrations. In addition, uranium concentration in groundwater showed negative and positive correlations with meteoric water infiltration percentages and chloride ion concentrations, respectively. These results indicate that the uranium concentration in the fossil seawater was diluted by the infiltration of the meteoric water, resulting in a decrease in ionic strength. As the consequence, the desorption of sorbed ions and dissolution of precipitates in groundwater may have progressed at higher proportions of meteoric water, leading to increases in <i>AR</i>. Furthermore, the timing of the infiltration was estimated from initial <i>AR</i> values of carbonate precipitation observed in the formation. <sup>234</sup>U/<sup>238</sup>U isotope ratio will be a useful indicator to understand the changes in water flow environment for low-flow reducing groundwater.</p>

    DOI： 10.2343/geochemj.gj24028

    Web of Science

    Scopus

    CiNii Research

  • Simple and Rapid HPLC-ICP-MS Method for the Simultaneous Determination of Cr(III) and Cr(VI) by Combining a 2,6-Pyridinedicarboxylic Acid Pre-Complexation Treatment

    Ito Akane, Isamoto Kazuto, Morishita Yuhei, Tanimizu Masaharu

    Mass Spectrometry   13 ( 1 )   A0161 - A0161   2024.12   （ ISSN:2187137X eISSN:21865116 ）

    　More details

    Language：English   Publisher：The Mass Spectrometry Society of Japan  

    <p>A simple and rapid analytical method was developed for the simultaneous determination of two chromium species, Cr(III) and Cr(VI), in the environmental waters by high-performance liquid chromatography–inductively coupled plasma-mass spectrometry (HPLC-ICP-MS). This study incorporated a chelating pretreatment with 2,6-pyridinedicarboxylic acid (PDCA) to convert Cr(III) species into a stable Cr(III)-PDCA anion complex, which was then separated from Cr(VI) oxyanion using an anion exchange column. Building on the fundamental analytical approach proposed by Shigeta <i>et al</i>. (doi: 10.2116/analsci.18P012), the mobile phase was optimized to ensure stability for ICP-MS detection, avoiding nonvolatile salts. Chromium species and chloride ions were effectively separated within 6 minutes at a flow rate of 0.6 mL min<sup>−1</sup> with the optimized mobile phase, which consisted of 50 mmol L<sup>−1</sup> ammonium acetate (pH 6.80) and 2 mmol L<sup>−1</sup> PDCA. The detection limits were 0.18 μg L<sup>−1</sup> and 0.09 μg L<sup>−1</sup> for Cr(III) and Cr(VI), respectively, at <i>m/z</i> 52 under He collision mode.</p>

    DOI： 10.5702/massspectrometry.a0161

    Scopus

    PubMed

    CiNii Research

  • Integrating Genomic & Transcriptomic Features for Noninvasive Detection, Characterization, and Monitoring of T-Cell Lymphomas

    Sugio, T; Nesselbush, M; Shukla, N; Garofalo, A; Mutter, JA; Esfahani, MS; Alig, SK; Shi, SY; Noordenbos, T; Hamilton, MP; Rossi, C; Tian, F; Liu, CL; Olsen, M; Kang, XM; Russler-Germain, DA; Horwitz, S; Kato, K; Ito, A; Yamagishi, M; Fukuda, T; Akashi, K; Uchimaru, K; Khodadoust, MS; Diehn, M; Mehta-Shah, N; Alizadeh, AA

    BLOOD   144   454 - 455   2024.11   （ ISSN:0006-4971 eISSN:1528-0020 ）

    　More details

  • 甲状腺乳頭癌の胸骨転移に対して胸骨切除,チタンプレート及びポリプロピレンメッシュを用いて胸骨再建を施行した一例

    中坪 正樹, 吉野 流世, 伊藤 茜, 氏家 菜々美, 安田 俊輔, 北田 正博

    日本呼吸器外科学会雑誌   38 ( 7 )   640 - 646   2024.11   （ ISSN:0919-0945 ）

    　More details

    Language：Japanese   Publisher：(一社)日本呼吸器外科学会  

    転移性胸骨腫瘍に対して胸骨切除を施行し,胸骨欠損部分に対してチタンプレート及びポリプロピレンメッシュを使用し胸骨再建を行った一例を報告する.症例は76歳男性.偶発的に胸部CTで胸骨腫瘤を指摘された.生検の結果,甲状腺乳頭癌原発の転移性胸骨腫瘍と診断された.内科的治療への抵抗性が示唆されたため外科的切除の方針となった.胸骨の広範な欠損は物理的脆弱性や奇異性呼吸に繋がる可能性があり,胸骨再建はその予防に有用であるとされる.再建方法には定まった指針はなく,様々な方法が報告されている.当科で行った再建方法は呼吸機能の維持に有用だった.(著者抄録)

  • Epigenetic Regulation of CXC Chemokine Expression by Environmental Electrophiles Through DNA Methyltransferase Inhibition

    Tsuchida, T; Kubota, S; Kamiuezono, S; Takasugi, N; Ito, A; Kumagai, Y; Uehara, T

    INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES   25 ( 21 )   2024.11   （ ISSN:1661-6596 eISSN:1422-0067 ）

    　More details

  • 脱出性痔核に対する硬化療法と外痔核切除を組み合わせた新術式の有効性と安全性　単施設観察研究(Efficacy and Safety of a New Technique Combining Injection Sclerotherapy and External Hemorrhoidectomy for Prolapsed Hemorrhoids: A Single-center Observational Study)

    Abe Tatsuya, Kunimoto Masao, Hachiro Yoshikazu, Ito Akane, Watanabe Kenji, Ota Shigenori, Ohara Kei, Inagaki Mitsuhiro, Saitoh Yusuke, Murakami Masanori

    Journal of the Anus, Rectum and Colon   8 ( 4 )   331 - 339   2024.10

    　More details

    Language：English   Publisher：(一社)日本大腸肛門病学会  

    これまで外痔核切除術とALTA硬化療法を組み合わせた術式(EA法)の長期成績に関する報告はない.そこでEAの有効性と安全性を明らかにし,EAが従来の痔核切除術に伴う術後合併症を軽減するかを検討した.対象はgrade II-IVの痔核に対してEAを施行した3,403例とした.手術は仙骨硬膜外麻酔下で行った.3方向の主痔核のうち,内痔核と外痔核が混在した混合痔核にはEAを適用し,外痔核を伴わない内痔核にはALTA単独療法を適用した.EAはその実施個数によって3パターン(EA1,EA2,EA3)に分類され,EA1が最も多く1,789例(52.6%),次いでEA2(36.2%),EA3(11.2%)の順であった.術後合併症は120例(3.5%)にみられ,術後早期は発熱と出血が多く,1ヵ月以降は肛門周囲膿瘍や痔瘻が多かった.術後の平均経過観察期間は26.4ヵ月で,136例(4.0%)が内痔核または混合痔核の再発のために再手術を受けた.EA1の再手術率はEA2やEA3よりも有意に高かった.5年,10年累積無再発率は,それぞれ92.5%,67.2%であった.EAは従来の痔核切除術と同等の根治性があり,術後の合併症は少なかった.よってEAは混合痔核に対する有用な術式である.(著者抄録)

  • ベンプロペリンは、単球/マクロファージ系細胞においてAktシグナル伝達を介してIL-6濃度を低下させリポ多糖類によるマウス敗血症モデルの死亡率を低下させる(Benproperine reduces IL-6 levels via Akt signaling in monocyte/macrophage-lineage cells and reduces the mortality of mouse sepsis model induced by lipopolysaccharide)

    Kawamura Ayumi, Ito Akane, Takahashi Ayaka, Sawamoto Atsushi, Okuyama Satoshi, Nakajima Mitsunari

    Journal of Pharmacological Sciences   156 ( 2 )   125 - 133   2024.10   （ ISSN:1347-8613 ）

    　More details

    Language：English   Publisher：(公社)日本薬理学会  

    鎮咳薬ベンプロペリン(BNP)のin vitroとin vivoでの抗炎症作用を解析した。BNPはin vitroでリポ多糖類(LPS)処理RAW264.7単球/マクロファージ系細胞における炎症性サイトカイン分泌IL-6を低下させた。IL-6は敗血症の症状を悪化させるので、BNPの敗血症に対する効果について検討した。BNPはLPS投与マウスの肺のIL-6濃度を低下させ、敗血症の症状である低体温症を改善し、敗血症マウスの死亡率を低下させた。BNPの抗炎症作用の機序を調べるため、LPS処理RAW264.7細胞の細胞内シグナル伝達を評価した。BNPはプロテインキナーゼB(Akt)リン酸化を誘導した。ホスホイノシチド3キナーゼ阻害剤のウォルトマンニンはAktのリン酸化を低下させ、IL-6分泌の低下を阻害した。以上より、BNPはAktシグナル伝達を介して抗炎症作用を発揮するので、敗血症を含む炎症性疾患の治療薬候補になると考えられた。

  • 混合型小細胞肺癌の治療経験

    吉野 流世, 中坪 正樹, 氏家 菜々美, 伊藤 茜, 吉田 奈七, 北田 正博

    胸部外科   77 ( 8 )   563 - 566   2024.8   （ ISSN:0021-5252 ）

    　More details

    Language：Japanese   Publisher：(株)南江堂  

    2019年6月～2023年6月に当院で経験した混合型小細胞肺癌5例を検討した。その結果、男性3例、女性2例、年齢の中央値は75歳、腫瘍の位置は右上葉2例、左上葉1例、右肺下葉2例であった。全例でNSE高値を認め、胸部CTでは不整形、充実性の腫瘤影、FDG-PETでは異常集積を認めた。術前の気管支鏡は乳癌肺転移が疑われた1例を除いて施行され、1例は小細胞肺癌と大細胞神経内分泌癌の鑑別が困難であった。術式は肺葉切除+リンパ節郭清術が3例、肺部分切除術が2例で、全例で術後の合併症を認めず、術後8～11日で退院した。組織型はいずれも混合型小細胞肺癌であったが、非小細胞肺癌部分の内訳は大細胞神経内分泌癌40%、腺癌40%、扁平上皮癌20%であった。4例で術後補助化学療法が施行された。2例で転移・再発を認め、うち1例は死亡した。

  • 【分離分析の最前線】水の多い条件下でICPMSと組み合わせたジオール結合ポリマー固定カラムを用いた環境水中のクロム種の迅速測定(【Frontiers of Separation Analysis】Rapid determination of chromium species in environmental waters using a diol-bonded polymer-stationary column under water-rich conditions coupled with ICPMS)

    Ito Akane, Morishita Yuhei, Morimoto Takahiro, Tanimizu Masaharu

    Analytical Sciences   40 ( 3 )   359 - 366   2024.3   （ ISSN:0910-6340 ）

    　More details

    Language：English   Publisher：(公社)日本分析化学会  

    水の多い条件下で親水性相互作用クロマトグラフィー(HILIC)と誘導結合プラズマ質量分析法(ICPMS)を組み合わせ、環境水中のCr(VI)とCr(III)を同時測定する迅速分析法を開発した。種々の化学形態のCr(III)種を2,6-ピリジンジカルボン酸(PDCA)により安定したCr(III)-PDCAアニオン錯体に誘導し、次にジオール結合ポリマーのHILICカラムでCr(VI)オキシアニオンから分離した。水性移動相(50mmol/L酢酸アンモニウム(pH7.0)、2mmol/L PDCA、4%アセトニトリル)でCr種とClイオンを分離できた。この手法にて、Cr(III)-PDCAよりCr(VI)が優先的に溶出するため、Cr(VI)を迅速に測定でき両Cr種を6.2分以内に分析しえた。He衝突モード下のCr(VI)m/z52の検出限界は0.19μg/L、Cr(III)の検出限界は0.35μg/Lで、従来のイオン交換クロマトグラフィー/ICPMS法と同等以上であり、種々のレベルのCr種を含む河川水試料のスパイク回収試験で定量的な回収を得た。

  • River water geochemistry around residual Ni deposits: a case study from northern Kyoto

    Ryotaro Takahashi, Kazuto Isamoto, Akane Ito, Mizuki Ishida, Yuina Sano, Yui Asakura, Hina Yasumoto, MASAHARU TANIMIZU

    Abstracts of Annual Meeting of the Geochemical Society of Japan   71 ( 0 )   42   2024

    　More details

    Language：Japanese   Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    <p></p>

    DOI： 10.14862/geochemproc.71.0_42

    CiNii Research

  • Chromium distribution in riverbed sediment and porewater in small estuaries

    Kazuto Isamoto, Akane Ito, Ryotaro Yamanaka, Masaharu Tanimizu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   71 ( 0 )   35   2024

    　More details

    Language：Japanese   Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    <p></p>

    DOI： 10.14862/geochemproc.71.0_35

    CiNii Research

  • Geochemical and isotopic behavior of chromium in small estuaries

    Akane Ito, Kazuto Isamoto, Masaharu Tanimizu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   71 ( 0 )   30   2024

    　More details

    Language：Japanese   Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    <p></p>

    DOI： 10.14862/geochemproc.71.0_30

    CiNii Research

  • Mineralogical evolution of a weathering profile in the Tagaung Taung Ni laterite deposit: significance of smectite in the formation of high-grade Ni ore in Myanmar Reviewed

    Ayaka Murofushi, Tsubasa Otake, Kenzo Sanematsu, Kyaw Zay Ya, Akane Ito, Ryosuke Kikuchi, Tsutomu Sato

    Mineralium Deposita   57 ( 7 )   1107 - 1122   2022.1   （ ISSN:0026-4598 eISSN:1432-1866 ）

    　More details

    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    Myanmar has a drier sub-tropical climate than countries that typically contain Ni laterite deposits, but hosts a Ni laterite deposit at Tagaung Taung. Given that Ni enrichment processes in the Tagaung Taung deposit are poorly understood, we investigated the geochemical and mineralogical evolution of two weathering profiles developed on different bedrocks in the central part of Myanmar: a partly serpentinized harzburgite at Tagaung and an almost completely serpentinized peridotite at Budaung. The whole-rock geochemical data indicate that Si was retained relative to Fe and Al in the weathering profiles. Nickel has been enriched to contents as high as 4.89 wt.% NiO in the saprolite layers at Tagaung, whereas the saprolite layers at Budaung contain ≤ 1.55 wt.% NiO. Smectite is the main mineral that formed in the saprolite layers at Tagaung, whereas secondary serpentine dominates the saprolite layers at Budaung. Microscopic observations indicate that Ni-smectite (> 10 wt.% NiO), which is only observed at Tagaung, formed as a replacement product of orthopyroxene. In addition to the high Ni fixation capacity of smectite relative to secondary serpentine, Ni-rich pore water derived from the dissolution of olivine likely contributed to the high Ni contents of smectite. Our results imply that high-grade Ni laterite deposits may develop on unaltered or partly serpentinized harzburgite under the climatic conditions typical of Myanmar.

    DOI： 10.1007/s00126-021-01089-6

    Scopus

    researchmap

    Other Link： https://link.springer.com/article/10.1007/s00126-021-01089-6/fulltext.html

  • Lithium isotope systematics of Arima hot spring waters and groundwaters in Kii Peninsula

    Umam R., Tanimizu M., Nakamura H., Nishio Y., Nakai R., Sugimoto N., Mori Y., Kobayashi Y., Ito A., Wakaki S., Nagaishi K., Ishikawa T.

    Geochemical Journal   56 ( 5 )   E8 - E17   2022   （ ISSN:00167002 ）

    　More details

    Publisher：Geochemical Journal  

    Slab-dehydrated fluid is considered to be involved in island arc magmatism. In this study, Li isotope ratios were determined for deep groundwater samples from the non-volcanic forearc region of SW Japan. The contribution of the slab-dehydrated fluid from the Philippine Sea Plate (PHS) was investigated in the Arima area and the eastern Kii Peninsula area, corresponding to the slab depths of ~60 km and 20-30 km, respectively. In the Arima area, the high-temperature thermal waters with high salinity called the Arima-type fluid were clarified to have low δ<sup>7</sup>Li values of +1-+3‰. The low δ<sup>7</sup>Li values with high Li concentrations are thought to be the result of fluid-rock interactions at high temperatures, which is consistent with the characteristics of the slab-dehydrated fluid. On the other hand, the δ<sup>7</sup>Li values of deep groundwaters in the eastern Kii Peninsula showed a wide range of +2 to +29‰. Several groundwater samples had a similar chemical property to the Arima-type fluid: low δ<sup>7</sup>Li values, low Cl/Li ratios, and <sup>87</sup>Sr/<sup>86</sup>Sr ratios around 0.708-0.710. They are distributed along the Median Tectonic Line (MTL) and within about 20 km south of the MTL. These results indicate a common supply of slab-dehydrated fluids to the non-volcanic forearc region in SW Japan from PHS along the large faults, and Li isotope ratios will be a useful indicator to detect their contribution.

    DOI： 10.2343/geochemj.GJ22015

    Scopus

▼display all

Presentations

  • HPLC-ICP-MSによる価数別定量法を用いた汽水域河床堆積物での間隙水中クロムの挙動の理解 International conference

    諌本　和士, @伊藤 茜, 森本 貴裕, 谷水 雅治

    2023年度日本地球化学会年会  2023.9 

    　More details

    Event date： 2023.9 - 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Geochemical and isotopic behavior of chromium in estuarine mixing zones: Insights from two rivers in Kochi Prefecture, Japan International conference

    @A. Ito, K. Isamoto, M. Tanimizu

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Event date： 2023.8 - 2024.3

    Language：English   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Geochemical constraints on the formation of high nickel grade saprolite ores: A comparison of nickel laterite deposits in Indonesia and Myanmar International conference

    @A. Ito, A. Murofushi, T. Otake, K. Sanematsu, T. Daimon, R. Kikuchi, and T. Sato

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Event date： 2023.8 - 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Mineralogy and geochemical characterization of the Wigu and Maji Ya Weta Carbonatites REE-related deposits, Kisaki area, Eastern Tanzania

    #A. T. Mutasingwa, @A. Imai, @K. Yonezu, @A. Ito

    72th Society of Resource Geology Annual Conference  2023.6 

    　More details

    Event date： 2023.6

    Language：English  

    Country：Japan  

  • 親水性相互作用クロマトグラフィーを用いたクロムの化学形態別迅速定量法の確立

    @伊藤 茜, @森下 雄平, @谷水 雅治

    第70回質量分析総合討論会  2022.6 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

  • HILIC-ICP-MSによるCr(III)およびCr(VI)の迅速同時定量法の確立

    @伊藤 茜, @谷水 雅治, @森下 雄平

    第71回分析化学会年会  2022.9 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

  • HPLC-ICP-MSを用いた表層水中の有機リン系農薬とその代謝物の高感度定量法の確立

    @森本 貴裕, @伊藤 茜, @谷水 雅治

    第71回質量分析総合討論会  2023.5 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

  • 鹿児島県北薩地域の新入来鉱山南西部における熱水変質帯の分布

    #伊東　準， @今井　亮， @米津幸太郎， @伊藤　茜， @五ノ井祐二， #有賀成高

    第72回資源地質学会年会  2023.6 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

    Distribution of hydrothermal alteration zones in the southwestern part of the Shin-Iriki mine, northern Kagoshima, Japan

  • Distribution of rare earth elements in the Kangankunde and Tundulu carbonatites of Chilwa Alkaline Province, Malawi – a key to mineralization conditions

    #D. Makwela, @A. Imai, @K. Yonezu, @A. Ito

    72th Society of Resource Geology Annual Conferenceual  2023.6 

    　More details

    Event date： 2023.6

    Language：English  

    Country：Japan  

  • Chromium behavior and isotopic signature in the estuarine mixing zone International conference

    A. Ito, K. Isamoto, M. Tanimizu

    日本地球惑星科学連合2023年大会  2023.5 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

    researchmap

  • 鹿児島県北薩地域の新入来鉱山南西部における熱水変質帯の分布

    伊東 準, 今井 亮, 米津幸太郎, 伊藤 茜, 五ノ井祐二, 有賀成高

    第72回資源地質学会年会  2023.6 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

    researchmap

  • 親水性相互作用クロマトグラフィーを用いたクロムの化学形態別迅速定量法の確立

    伊藤 茜, 森下 雄平, 谷水 雅治

    第70回質量分析総合討論会  2022.6 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

    researchmap

  • Mineralogy and geochemical characterization of the Wigu and Maji Ya Weta Carbonatites REE-related deposits, Kisaki area, Eastern Tanzania

    A. T. Mutasingwa, A. Imai, K. Yonezu, A. Ito

    第72回資源地質学会年会  2023.6 

    　More details

    Event date： 2023.6

    Language：English  

    Country：Japan  

    researchmap

  • HPLC-ICP-MSを用いた表層水中の有機リン系農薬とその代謝物の高感度定量法の確立

    森本 貴裕, 伊藤 茜, 谷水 雅治

    第71回質量分析総合討論会  2023.5 

    　More details

    Event date： 2023.6

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

    researchmap

  • HILIC-ICP-MSによるCr(III)およびCr(VI)の迅速同時定量法の確立

    伊藤 茜, 谷水 雅治, 森下 雄平

    第71回分析化学会年会  2022.9 

    　More details

    Event date： 2023.6

    Language：Japanese  

    Country：Japan  

    researchmap

  • Chromium behavior and isotopic signature in the estuarine mixing zone

    @伊藤 茜, 諌本　和士, 谷水 雅治

    日本地球惑星科学連合2023年大会  2023.5 

    　More details

    Event date： 2023.5 - 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：幕張メッセ   Country：Japan  

  • Origin of dissolved uranium in a deep groundwater in siliceous mudstone aquifer evaluated from 234U/238U activity ratios

    C. Kuribayashi, K. Miyakawa, A. Ito, M. Tanimizu

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • Geochemical constraints on the formation of high nickel grade saprolite ores: A comparison of nickel laterite deposits in Indonesia and Myanmar

    A. Ito, A. Murofushi, T. Otake, K. Sanematsu, T. Daimon, R. Kikuchi, T. Sato

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • Geochemical and isotopic behavior of chromium in estuarine mixing zones: Insights from two rivers in Kochi Prefecture, Japan

    A. Ito, K. Isamoto, M. Tanimizu

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Presentation type：Oral presentation (general)  

    researchmap

  • Influence of estuaries on chromium isotope ratio and geochemical behavior: A study in two rivers, Kochi, Japan International conference

    A. Ito, K. Isamoto, M. Tanimizu

    The 37th International Geological Congress 2024  2024.8 

    　More details

    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

  • Mineralogy and geochemistry of nickel laterite deposit in the Acoje block of the Zambales ophiolite, Philippines International coauthorship International conference

    33) Y. Suzuki, A. Ito, K. Yonezu, J. Gabo-Ratio, I. Duenas, J. Urgel, A. Imai

    The 37th International Geological Congress 2024  2024.8 

    　More details

    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

  • Development of a simple and rapid simultaneous determination methods for Cr(III) and Cr(VI) by HPLC-ICP-MS International conference

    K. Isamoto, A. Ito, M. Tanimizu

    25th International Mass Spectrometry Conference  2024.8 

    　More details

    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

  • Variation of 234U/238U isotope ratios in groundwater under contrasting redox environments measured by mass spectrometry International conference

    C. Kuribayashi, K. Miyakawa, A. Ito, M. Tanimizu

    25th International Mass Spectrometry Conference  2024.8 

    　More details

    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

    Venue：Melbourne  

  • Origin of dissolved uranium in a deep groundwater in siliceous mudstone aquifer evaluated from 234U/238U activity ratios International conference

    C. Kuribayashi, K. Miyakawa, @A. Ito, M. Tanimizu

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  2023.8 

    　More details

    Event date： 2023.8 - 2024.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • HILIC-ICP-MSによるCr(III)およびCr(VI)の迅速同時定量法の確立

    伊藤 茜, 谷水 雅治, 森下 雄平

    日本分析化学会講演要旨集  2022.9  (公社)日本分析化学会

    　More details

    Language：Japanese  

  • Geochemical constraints on the mobilization of Ni and critical metals in laterite deposits, Sulawesi, Indonesia: A mass-balance approach

    伊藤 茜, 大竹 翼, Adi Maulana, 実松 健造, Sufriadin, 佐藤 努

    資源地質学会第71回年会 (Resource Geology Best Article Award 2021 受賞講演) 

    　More details

    Presentation type：Oral presentation (invited, special)  

    researchmap

  • 若年男性の左乳房に発生した神経鞘腫(Schwannoma)の一例

    氏家 菜々美, 中坪 正樹, 吉野 流世, 伊藤 茜, 吉田 奈七, 北田 正博, 青木 直子

    日本臨床外科学会雑誌  2023.10  日本臨床外科学会

    　More details

    Language：Japanese  

  • 肺に発生したIgG4関連疾患の一例

    中坪 正樹, 吉野 流世, 伊藤 茜, 吉田 奈七, 北田 正博

    日本臨床外科学会雑誌  2023.10  日本臨床外科学会

    　More details

    Language：Japanese  

  • 当院のトラスツズマブデルクステカン使用経験

    伊藤 茜, 中坪 正樹, 吉野 流世, 氏家 菜々美, 吉田 奈七, 北田 正博

    日本臨床外科学会雑誌  2023.10  日本臨床外科学会

    　More details

    Language：Japanese  

  • 当院におけるトリプルネガティブ再発乳癌に対するペムブロリズマブの使用経験

    吉野 流世, 中坪 正樹, 伊藤 茜, 安田 俊輔, 吉田 奈七, 北田 正博

    日本乳癌学会総会プログラム抄録集  2023.6  (一社)日本乳癌学会

    　More details

    Language：Japanese  

  • 当科における乳癌肺転移症例に対する切除術についての検討

    吉野 流世, 高橋 賢吾, 畑中 望美, 氏家 菜々美, 伊藤 茜, 安田 俊輔, 北田 正博

    日本呼吸器外科学会雑誌  2025.4  (一社)日本呼吸器外科学会

    　More details

    Language：Japanese  

  • 壊死性筋膜炎を発症した劇症型溶連菌感染症の栄養療法　NST介入で奏功した1例

    小川 知里, 岡本 まとか, 大関 由美, 伊藤 茜, 大塚 友美, 細川 史保子, 千葉 正博

    日本病態栄養学会誌  2025.1  (一社)日本病態栄養学会

    　More details

    Language：Japanese  

  • 切開くり抜き法+括約筋形成術

    安部 達也, 鉢呂 芳一, 伊藤 茜, 太田 盛道, 渡邉 賢二, 小原 啓, 稲垣 光裕, 國本 正雄

    日本臨床肛門病学会雑誌  2024.3  日本臨床肛門病学会

    　More details

    Language：Japanese  

  • 乳腺扁平上皮癌の超音波画像の特徴と病理学的検討

    伊藤 茜, 川見 弘之, 北田 正博

    乳腺甲状腺超音波医学  2024.11  (一社)日本乳腺甲状腺超音波医学会

    　More details

    Language：Japanese  

▼display all

MISC

Professional Memberships

  • Japan Geoscience Union

  • Geochemical Society

  • Society of Resource Geology

  • 資源地質学会

    　 More details

  • Japan Geoscience Union

    　 More details

  • Geochemical Society

    　 More details

  • 地球化学会

    　 More details

▼display all

Committee Memberships

  • 資源地質学会   Councilor   Domestic

    2024.4 - 2026.3   

  • 資源地質学会   論文審査委員   Domestic

    2023.4 - 2024.3   

  • 資源地質学会   行事委員   Domestic

    2023.4 - 2024.3   

  • 資源地質学会   行事委員  

    2023.4 - 2024.3   

    　 More details

  • 資源地質学会   論文審査委員  

    2023.4 - 2024.3   

    　 More details

  • 日本地球化学会   ショートコース運営委員   Domestic

    2022.4 - 2023.3   

  • 日本地球化学会   ショートコース運営委員  

    2022.4 - 2023.3   

    　 More details

▼display all

Academic Activities

  • コンビーナー International contribution

    Water Rock Interaction (WRI-17) – Applied Isotope Geochemistry (AIG-14)  （ Japan ） 2023.8

    　More details

    Type：Competition, symposium, etc. 

  • 座長

    第72回資源地質学会年会  （ Japan ） 2023.6

    　More details

    Type：Competition, symposium, etc. 

  • 行事委員

    第７２回資源地質学会年会  （ Japan ） 2023.6

    　More details

    Type：Competition, symposium, etc. 

  • 第72回資源地質学会年会

    （ Japan ） 2023.6

    　More details

    Type：Competition, symposium, etc. 

    researchmap

  • 第７２回資源地質学会年会

    （ Japan ） 2023.6

    　More details

    Type：Competition, symposium, etc. 

    researchmap

Research Projects

  • 風化鉱床における鉄微粒子のレアメタル濃集機構：微視的観察と多変量解析からの制約

    Grant number：24K17643  2024.4 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

    伊藤 茜

    　 More details

    Grant type：Scientific research funding

    脱炭素社会実現のためには, ニッケルやコバルトを始めとするレアメタルの安定的な供給構造の構築が必要である. 東南アジアなどに広く分布するラテライト鉱床では, 近年の製錬技術の革新により, 低品位鉱石からの複数レアメタルの同時回収による資源の高度有効活用に期待が寄せられている. 一方, レアメタル濃集部の有効な探査指標は確立されておらず, 従来の手法では環境への負荷が大きい. 本研究では, 微視的観察, および詳細な鉱物学的解析から, ラテライト鉱床におけるレアメタル濃集プロセスを体系的に理解する. また, 数理統計的手法を用いて, レアメタル濃集の効率的な探査手法を提案する.

    CiNii Research

  • 風化鉱床における鉄微粒子のレアメタル濃集機構:微視的観察と多変量解析からの制約

    2024 - 2026

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • Assemblage of life's building molecules in the early Earth environment

    Grant number：22H00165  2022.4 - 2026.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    古川 善博, 伊藤 茜, 掛川 武

    　 More details

    Grant type：Scientific research funding

    生命誕生に向けてどのような環境によって生体高分子(RNAやタンパク質)が組み立てら れたのかということは、生命の起源における最大の謎の一つである。初期地球のホウ酸を濃集する環境が生命の材料分子である糖の生成と蓄積を可能にしたと考えられるようになった。本研究は地球科学的な視点から、糖とホウ酸が蓄積する蒸発環境が、化学進化の次の段階である高分子化にも有利に働くという着想を基に、ホウ酸が濃集する乾燥環境が原始的タンパク質の形成と、原始的RNAの生成を達成し得るかどうかを明らかにする。RNAとタンパク質が同時に生成する環境を見出せば、地球科学でしかできない生命起源解明への大きな貢献になる。

    CiNii Research

  • イオン-分子反応を利用した迅速同位体分析に基づく地下水流動解析

    Grant number：22K12349  2022.4 - 2025.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    谷水 雅治, 細野 高啓, 伊藤 茜

    　 More details

    Grant type：Scientific research funding

    地下水資源の保護や持続的利用の観点から、元素の同位体トレーサーを用いた地下水流動の詳細な解析による水質評価が必要とされている。本研究では、新しい原理を用いた無機質量分析手法により、迅速かつ多数の試料の同位体分析を可能とする新規手法を確立する。
    地下水年代(流動速度)、地下水混合、酸化還元変化の評価トレーサーとして、大気核実験由来236U、87Sr/86Sr比の迅速測定、および水溶液中の34S/32S比の直接測定法の各分析手法を確立する。得られた手法を、熊本市域地下水に適用し、本手法で得られたデータの妥当性と汎用性を評価する。

    CiNii Research

  • 初期地球環境による生命材料分子の組み立て

    2022 - 2025

    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

  • イオン-分子反応を利用した迅速同位体分析に基づく地下水流動解析

    2022 - 2025

    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

  • 高精度クロム安定同位体比測定法の開発および環境試料への応用」に関する研究

    2022 - 2023

    同位体環境学共同研究：部門共同研究

    　 More details

    Grant type：Contract research

  • Impact of estuaries on heavy metal isotope ratios of river water: Implications for redox proxy

    Grant number：21K17882  2021 - 2024

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Early-Career Scientists

    Ito Akane

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

    This study focused on the chromium isotope ratio, an important redox proxy for reconstructing ancient environments, and tested the hypothesis that the chromium isotope ratio preserved in marine sediments suggests the extent of past oxidation. Specifically, we examined the "preservation of chromium isotope ratio from land to sea" in two rivers in Kochi Prefecture, Japan, investigating variations in chromium concentration, chemical species, and isotope ratios. As a result, it became evident that hexavalent chromium is reduced in freshwater areas, while in brackish waters, the isotope ratio undergoes significant changes due to mixing with seawater and release from riverbed sediments. Further research is needed to understand the preservation of chromium isotope ratios from land to sea, but our study suggests the importance of evaluating the influence of riverbed sediments based on our findings.

    CiNii Research

  • 重元素安定同位体を用いたラテライト鉱床におけるCrの環境同位体解析

    Grant number：19K24388  2019 - 2021

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Research Activity start-up

    　 More details

    Authorship：Principal investigator  Grant type：Scientific research funding

  • ラテライト鉱床における6価クロムの生成機構および溶出挙動の解明

    2019 - 2020

    クリタ水・環境科学振興財団

    　 More details

    Authorship：Principal investigator  Grant type：Contract research

▼display all

Educational Activities

  • 基幹教育
    基幹教育セミナー

    学部専攻教育
    フィールド地球科学演習、地球システム工学実習、地球資源インターンシップ

Class subject

  • 地球システム工学実習

    2024.10 - 2025.3   Second semester

  • フィールド地球科学演習

    2024.10 - 2025.3   Second semester

  • 基幹教育セミナー

    2024.6 - 2024.8   Summer quarter

  • フィールド地球科学演習

    2023.10 - 2024.3   Second semester

  • 地球システム工学実習

    2023.10 - 2024.3   Second semester

  • 基幹教育セミナー

    2023.6 - 2023.8   Summer quarter

  • フィールド地球科学演習

    2022.10 - 2023.3   Second semester

  • 地球システム工学実習

    2022.10 - 2023.3   Second semester

  • 基幹教育セミナー

    2025.6 - 2025.8   Summer quarter

  • フィールド地球科学演習

    2024.10 - 2025.3   Second semester

  • 基幹教育セミナー

    2024.6 - 2024.8   Summer quarter

▼display all

FD Participation

  • 2023.5   Role：Participation   Title：基幹教育セミナーFD

    Organizer：[Undergraduate school/graduate school/graduate faculty]

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

  • 2022  京都大学・全学共通科目・地球科学入門-ダイナミクス  Classification:Part-time lecturer  Domestic/International Classification:Japan 

    Semester, Day Time or Duration：後期

Participation in international educational events, etc.

  • 2023.6

    Hasanuddin University

    Education on Mining Exploration

    　 More details

    Venue：インドネシア・マカッサル (オンライン)

    Number of participants：50

Outline of Social Contribution and International Cooperation activities

  • 国内では, アウトリーチ活動の一環として, 市民公開講座・高等学校出前講義の講師を務めている. 国際活動では, 海外の大学で学生が主催するセミナーの講師を務めている.

Social Activities

  • 九州大学工学部オンラインオープンキャンパス

    2022.8

    　More details

    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Other

  • 九州大学工学部オンラインオープンキャンパス

    2022.8

    　More details

    Type：Other

    researchmap

  • 出前講義・地球環境と調和するための地球化学

    祥雲館高校  2022.6

    　More details

    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Other

  • 出前講義・地球環境と調和するための地球化学

    祥雲館高校  2022.6

    　More details

    Type：Other

    researchmap

  • 出前講義・地球環境と調和するための地球化学

    2021.6

    　More details

    Audience：Infants,　Schoolchildren,　Junior students,　High school students

    Type：Other

  • 出前講義・地球環境と調和するための地球化学

    2021.6

    　More details

    Type：Other

    researchmap

▼display all

Travel Abroad

  • 2023.12

    Staying countory name 1：Ecuador   Staying institution name 1：Yachay Tech University

  • 2023.10

    Staying countory name 1：Philippines   Staying institution name 1：フィリピン、ザンバレス地域

  • 2020.1

    Staying countory name 1：France   Staying institution name 1：Géosciences Environnement Toulouse

  • 2020.1

    Staying countory name 1：France   Staying institution name 1：IFREMER