2022 Fiscal Year Final Research Report
Investigation of the Sources and Behavior for Particulate Trace Metals in the Oceans Based on Stable Isotope Ratio Analysis
| Project/Area Number |
20K19957
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 63010:Environmental dynamic analysis-related
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 微量金属 / 安定同位体比 / 生物地球化学循環 / 海洋 / 分析化学 |
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| Outline of Final Research Achievements |
In the ocean, trace metals such as Fe, Ni, Cu, Zn, Cd, and Pb are essential or toxic to organisms. Their cycling is affected by biogeochemical processes such as biological activities, ocean circulation, and redox.
In this study, we have developed a method for determining stable isotope ratios of trace metals in natural samples and used the method to elucidate the origin and behavior of trace metals in atmospheric aerosols, seawater particles, and seawater.
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| Free Research Field |
化学海洋
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| Academic Significance and Societal Importance of the Research Achievements |
海水中の微量金属は，海洋の生物多様性や一次生産に影響を与える．本研究で得られた海水中微量金属の起源に関する知見は，人間活動による海洋汚染の規模推定や，その汚染が未来の海洋環境に与える影響の評価に役立つ．また，本研究で提案する海水中微量金属の海底への輸送メカニズムは，海底堆積物に保存されている微量金属から過去の海洋環境を復元できる可能性を示唆する．
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