摘要
本文对砷的微生物转化与代谢机制研究进行了综述。研究发现,抗砷微生物参与了砷的转化与代谢,并对砷的迁移转化起到了重要作用。在此过程中主要存在三种机制:砷氧化机制、砷还原机制和砷甲基化机制。砷氧化微生物将As(Ⅲ)氧化为毒性相对较小的As(Ⅴ);砷还原微生物可以将As(Ⅴ)还原为毒性更大的As(Ⅲ),从而增加毒性;砷甲基化微生物能通过甲基化作用产生毒性较小的有机砷。希望本文的综述能为更深层次的理解砷的转化与代谢、生物法修复砷污染技术提供参考。
引文
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