| 地下水典型氧化还原敏感组分迁移转化的研究热点和趋势 |
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| 引用本文： | 郭华明,高志鹏,修伟.地下水典型氧化还原敏感组分迁移转化的研究热点和趋势[J].地学前缘,2022,29(3):64-75. |
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| 作者姓名： | 郭华明 高志鹏 修伟 |
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| 作者单位： | 1.中国地质大学(北京) 水资源与环境学院, 北京 1000832.中国地质大学(北京) 地下水循环与环境演化教育部重点实验室, 北京 1000833.中国地质大学(北京) 科学研究院, 北京 100083 |
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| 基金项目： | 国家重点研发计划;国家自然科学基金 |
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| 摘 要： | C-N-S反应体系是地下水系统中氧化还原敏感组分循环和能量流动的关键系统,但它如何与Fe、Mn循环过程、相关功能微生物代谢路径耦合并控制氧化还原敏感组分的迁移转化却并不清楚。本文在对国内外相关文献进行归纳总结的基础上,把地下水中的氧化还原敏感组分分为氧化富集型和还原富集型,较为系统地梳理了地下水系统C、N、S循环驱动的典型氧化还原敏感组分(主要以U、Cr、Fe、As为例)迁移转化过程,指出了该领域的主要研究热点,包括C-N反应体系中典型氧化还原敏感组分的迁移转化、C-S反应体系中还原富集型组分活化和氧化富集型组分固定机理、典型氧化还原敏感组分之间的相互作用、微生物作用下典型氧化还原敏感组分的转化和富集等,并提出基于代谢路径的C-N-S反应体系及其驱动下地下水典型氧化还原敏感组分转化过程和富集机理,将成为本领域的发展趋势。
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| 关 键 词： | 含水系统 砷 铀 微生物 同位素 水岩相互作用 |
| 收稿时间： | 2021-11-12 |
Typical redox-sensitive components in groundwater systems:Research highlights and trends |
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| GUO Huaming,GAO Zhipeng,XIU Wei.Typical redox-sensitive components in groundwater systems:Research highlights and trends[J].Earth Science Frontiers,2022,29(3):64-75. |
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| Authors: | GUO Huaming GAO Zhipeng XIU Wei |
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| Institution: | 1. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China2. MOE Key Laboratory of Groundwater Circulation and Environment Evolution, China University of Geosciences (Beijing), Beijing 100083, China3. Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China |
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| Abstract: | Although C, N, S cycling is essential to cycling of redox-sensitive components and energy flux in groundwater systems, the mechanism of its couplings to Fe-Mn cycling and relavent functional microbial metabolic pathway in controlling the transport and transformation of redox-sensitive components is poorly understood. Based on comprehensive national and international literature surveys, this paper divided the groundwater redox-sensitive components into oxic condition-related enrichment type (oxic type, enriched in oxic groundwater) and reducing condition-related enrichment type (reducing type, enriched in reducing groundwater), and systematically sorted out C, N, and/or S cycling-driven transport and transformation processes of typical redox-sensitive components (U, Cr, Fe, As as main examples) in groundwater systems. The research highlights of the relevant research fields mainly included coupling of C, N cycling and transport-transformation of typical redox-sensitive components, C, S cycling-driven mechanisms for the mobilization of reducing type components and the immobilization of the oxic type components, hydrogeochemical interactions bewteen typical redox-sensitive components, and microbe-mediated transformation and enrichment of typical redox-sensitive components. The research trends revealed by this study were metabolic pathway-based C, N, S cycling and its control on the transformation processes and enrichment mechanisms of typical redox-sensitive components in groundwater systems. |
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| Keywords: | aquifer system arsenic uranium microbe isotope water-rock interaction |
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