| High precision Fe isotope measurement and applications in aquatic environmental studies |
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| 作者姓名： | Qianli XIE Peter Dillon Lewis Molot |
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| 作者单位： | [1]Worsfold Water Quality Centre, Trent University, Peterborough, Canada [2]Faculty of Environmental Studies, York University, Toronto, Canada |
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| 摘 要： | In aquatic environment, iron redox reaction may occur through a） microbial activity and b） photo-chemistry. Iron chemistry plays a significant role in the health of aquatic ecosystems. For example, Fe^2＋ is more mobile than Fe^3＋. Iron can be bound to dissolved organic carbon （DOC）, and when Fe^2＋ is oxidized to Fe^3＋ （biotically or abiotically）, Fe is precipitated and induce co-precipitation of the DOC. Furthermore, iron is a major nutrient to aquatic organisms. Because Fe^2＋ is more bioavailable than Fe^3＋, iron redox chemistry can be a controlling factor in biological production, such as algae bloom which can be a public health concern. Experiments have shown that Fe redox reactions, biotically or abiotically, can generate significant Fe isotope fraction among different Fe species. Accordingly, analysis of Fe isotope composition of phytoplanktons can be a valuable tool in studying Fe dynamics in ecosystems. Precise measurement of Fe isotope, however, presents some challenges. Recent advances in mass spectrometry, specifically high resolution MC-ICP-MS, allow measurement of Fe isotopes free of interferences.
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| 关 键 词： | 铁 同位素 HR-MC-ICP-MS 浮游植物 水生生态系统 |
High precision Fe isotope measurement and applications in aquatic environmental studies |
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| Qianli XIE Peter Dillon Lewis Molot.High precision Fe isotope measurement and applications in aquatic environmental studies[J].Chinese Journal of Geochemistry,2006,25(B08):204-204. |
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| Abstract: | |
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| Keywords: | Fe isotope HR-MC-ICP-MS phytoplankton aquatic ecosystem |
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