Yamaguchi Akiko

Affiliation and department：

Research field (1)： Space and planetary science

Research theme for competitive and other funds (3)：

2021 - 2024 Application of Rb-K substituted biotite to distinguish K supplying power from Cs retention ability on soil-to-plant transfer of radiocesium
2021 - 2023 粘土鉱物により放射性核種は還元されるか? -放射性廃棄物地層処分と関連して-
2019 - 2022 Investigation of adsorption structure of radium on clay minerals by experiment and simulation

Papers (14)：

Takahashi Yoshio*, Yamaguchi Akiko, Yomogida Takumi. Environmental geochemistry of radionuclides (Environmental radiochemistry). Treatise on Geochemistry, 3rd edition, Vol.6. 2025. 46
Oguri Kaori, Hagura Naoto*, Yamaguchi Akiko, Okumura Masahiko, Matsuura Haruaki*, Tsunashima Yasumichi, Aoki Katsumi, Arai Yoichi, Watanabe So. Characterization of mineral composition using PIXE and EXAFS analyses to elucidate the Barium adsorption mechanism. Nuclear Instruments and Methods in Physics Research B. 2024. 556. 165516\_1-165516\_8
Tanaka Kazuya, Yamaji Keiko*, Masuya Hayato*, Tomita Jumpei, Ozawa Mayumi*, Yamasaki Shinya*, Tokunaga Kohei, Fukuyama Kenjin*, Ohara Yoshiyuki*, Maamoun I.*, et al. Microbially formed Mn(IV) oxide as a novel adsorbent for removal of Radium. Chemosphere. 2024. 355. 141837\_1-141837\_11
Akiko Yamaguchi, Yuichi Kurihara, Kojiro Nagata, Kazuya Tanaka, Shogo Higaki, Tohru Kobayashi, Hajime Tanida, Yoshiyuki Ohara, Keiichi Yokoyama, Tsuyoshi Yaita, et al. Molecular geochemistry of radium: A key to understanding cation adsorption reaction on clay minerals. Journal of Colloid and Interface Science. 2024. 661. 317-332
Li W.*, Yamada Shinya*, Hashimoto Tadashi, Okumura Takuma*, Hayakawa Ryota*, Nitta Kiyofumi*, Sekizawa Oki*, Suga Hiroki*, Uruga Tomoya*, Ichinohe Yuto*, et al. High-sensitive XANES analysis at Ce L$_{2}$-edge for Ce in bauxites using transition-edge sensors; Implications for Ti-rich geological samples. Analytica Chimica Acta. 2023. 1240. 340755\_1-340755\_9

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MISC (10)：

Yamaguchi Akiko, Okumura Masahiko, Takahashi Yoshio*. The First observation of hydrated radium at the molecular level. Isotope News. 2023. 789. 20-23
Uno Koichiro*, Nakao Atsushi*, Okumura Masahiko, Yamaguchi Akiko, Kogure Toshihiro*, Yanai Junta*. Mineralogical factors causing underestimation of $K$$_{\rm d}$ values calculated from radiocesium interception potential. Nihon Dojo Hiryo Gaku Zasshi. 2023. 94. 5. 376-384
Yamaguchi Akiko. Investigation of environmental behavior of multiple ions based on systematic understanding of adsorption reaction on clay minerals. Hosha Kagaku. 2023. 48. 56-59
Yamaguchi Akiko. Investigation of the environmental behavior of radium based on information at the molecular level. Hosha Kagaku. 2023. 47. 41-42
Yamaguchi Akiko, Nagata Kojiro*, Tanaka Kazuya, Kobayashi Keita, Kobayashi Toru, Shimojo Kojiro, Tanida Hajime, Sekiguchi Tetsuhiro, Kaneta Yui, Matsuda Shohei, et al. Investigation of hydration and adsorption structures on clay minerals of radium by EXAFS. Hosha Kagaku. 2022. 45. 28-30

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Lectures and oral presentations (58)：

Redox environment reconstruction of the asteroid Ryugu's parent body by measuring valences of redox sensitive elements
(2024年度日本地球化学会第71回年会)
Trace element speciation in Ryugu samples; Implications for water solubility of elements in a sulfide-dominated paleoocean
(2024年度日本地球化学会第71回年会)
Influence of redox reactions by iron in smectite on the atmospheric environment
(2024年度日本地球化学会第71回年会)
Elementary processes in biotite weathering investigated by complementary use of XANES high-resolution measurements and first-principles calculations
(2024年度日本地球化学会第71回年会)
Oxidation reaction of Fe in weathered biotite investigated by XANES simulation and high-resolution measurement
(日本放射化学会第68回討論会(2024))

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Education (3)：

2019 - 2023 The University of Tokyo Graduate School of Science Department of Earth and Planetary Science
2017 - 2019 The University of Tokyo Graduate School of Science Department of Earth and Planetary Science
2015 - 2017 The University of Tokyo Faculty of Science Department of Earth and Planetary Environmental Science

Professional career (1)：

Doctor of Philosophy (The University of Tokyo)

Work history (1)：

2019/04 - 現在 Japan Atomic Energy Agency Center for Computational Science & e-Systems

Awards (10)：

2024/03 - 日本原子力学会計算科学技術部会部会学生優秀講演賞
2024/03 - 日本原子力学会計算科学技術部会部会CG賞
2023/09 - 日本土壌肥料学会若手口頭発表優秀賞粘土鉱物吸着構造の系統的理解: EXAFS実験と第一原理計算の相補利用
2023/03 - 東京大学大学院理学系研究科研究奨励賞(博士課程)
2022/09 - 日本放射化学会若手優秀賞分子レベルの情報に基づいたラジウムの環境挙動解明

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