环境中汞的微生物还原过程及机制  

Microbial reduction process and mechanism of mercury in the environment

作　　者：崔艺凡 郭瑛瑛 史建波[2] 梁勇 阴永光 蔡勇[2,3] CUI Yifan;GUO Yingying;SHI Jianbo;LIANG Yong;YIN Yongguang;CAI Yong(Institute of Environment and Health,Jianghan University,Wuhan,430056,China;State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China;Laboratory of Environmental Nanotechnology and Health,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,China)

机构地区：[1]江汉大学环境与健康研究院,武汉430056 [2]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085 [3]中国科学院生态环境研究中心环境纳米技术与健康效应实验室,北京100085

出　　处：《环境化学》2022年第5期1461-1468,共8页Environmental Chemistry

基　　金：国家自然科学基金(21906168,21777178);中国科学院前沿科学重点研究项目(QYZDB-SSW-DQC018)资助。

摘　　要：汞是一种全球性的环境污染物.汞的还原过程可降低地表环境汞浓度,促进汞的大气传输,对汞的区域/全球循环、甲基化及生物积累具有重要的作用.地表环境微生物还原是汞还原的重要过程,在多种环境介质中均可发生.本文介绍了多种环境介质中微生物汞还原在汞生物地球化学循环中的重要作用,详细总结了有氧与缺氧条件下微生物汞还原的途径与机制,提出了微 生物还原汞的其它可能机制,并对相关领域的研究进行了展望.Mercury(Hg)is a global environmental pollutant.The reduction of Hg^(2+)in multiple environmental matrices,which can reduce the Hg concentrations in terrestrial and marine systems and promote the transport of Hg in atmosphere,is of great importance in the regional/global cycle,methylation,and bioaccumulation of Hg.Microbial reduction is one of the important processes of Hg reduction,which can occur in a variety of environmental compartments.This review introduced the important role of microbial reduction in Hg biogeochemical cycle in a variety of environmental compartments,summarized the detailed pathways and mechanisms regarding microbial Hg^(2+) reduction under aerobic and anoxic conditions,and proposed other possible mechanisms of microbial Hg^(2+) reduction and future research perspective in related fields.

关 键 词：汞 还原 微生物 好氧 厌氧 

分 类 号：X172[环境科学与工程—环境科学]