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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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调水后河床表层沉积物中重金属的形态转化
Keywords: 表层沉积物,重金属,赋存形态,转化机理,客水
Abstract:
？通过河床表层沉积物重金属释放实验，分析并揭示了受客水后河床表层沉积物中重金属co、cr、mn、mo、pb、v的赋存形态转化机理。结果表明：受水区的环境条件(ph值、eh值等)变化、沉积物理化性质变化和环境中微生物的作用，重金属生物有效态及残渣态之间的相互转化，改变了重金属的生物有效性，在受客水过程中受溶解沉淀、吸附解吸、氧化还原和离子交换等地球化学作用的影响，河床沉积物中重金属发生迁移转化，在不断受水条件下河床沉积物中重金属不断释放，沉积物不断净化。
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