| Project/Area Number |
21350042
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Analytical chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HIRATA Takafumi 京都大学, 理学研究科, 教授 (10251612)
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| Co-Investigator(Renkei-kenkyūsha) |
NORISUYE Kazuhiro 京都大学, 化学研究所, 助教 (50335220)
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| Research Collaborator |
NAKAGAWA Yusuke 京都大学, 理学研究科化学専攻, 博士
MORISHI Mayui 京都大学, 理学研究科化学専攻, 修士
TAKANO Shotaro 京都大学, 理学研究科化学専攻, 修士
ICHIWAKI Shouhei 京都大学, 理学研究科化学専攻, 修士
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2009: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Keywords | 環境分析 / 分析化学 / 海洋科学 / 地球化学 / 重元素安定同位体 / 海洋生態 / HR-ICP-MS / モリブデン / 銅 / タングステン / MC-ICP-MS |
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| Research Abstract |
Isotopic ratios of heavy elements are widely noticed as novel measures in marine chemistry. In the present study, we have analyzed seawater samples collected from the Pacific, Southern and Atlantic Oceans, confirming that the isotopic composition of dissolved molybdenum is uniform throughout the global ocean. We developed a precise method for isotopic analysis of dissolved copper in seawater. We also optimized an isotopic analysis method for molybdenum and tungsten in sediments. The isotopic ratios of these elements are promising as a tracer of biogeochemical cycling and a proxy in paleoceanography.
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