%A GUO Huaming, GAO Zhipeng, XIU Wei %T Typical redox-sensitive components in groundwater systems: Research highlights and trends %0 Journal Article %D 2022 %J Earth Science Frontiers %R 10.13745/j.esf.sf.2022.1.37 %P 64-75 %V 29 %N 3 %U {https://www.earthsciencefrontiers.net.cn/CN/abstract/article_6320.shtml} %8 2022-05-25 %X

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.