铬污染物的环境化学行为综述
首发时间:2011-08-03
摘要:铬是地下水和土壤中常见的污染物。铬的复杂的环境化学行为与其多重价态和络合、沉淀以及吸附性质密切相关。本文总结了铬污染物在环境介质中的赋存形态、吸附、迁移转化规律,重点论述了不同价态的铬的氧化还原反应和光化学循环转化过程,并对目前研究中存在的问题进行了总结,对今后的发展方向进行了展望。因此,本综述对于研究制定铬污染控制与环境修复方案具有一定的指导价值。
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Environmental chemical behaviors of chromium pollutants: A review
Abstract:Chromium is a common heavy metal pollutant in underground water and soil. The complex environmental chemical behaviors of chromium pollutant are closely related to their own properties, such as valence states, complexation, precipitation and sorption. In this paper, speciation, sorption and transformation of chromium in environmental media are briefly summarized. In particular, the redox reactions and photochemical cycling of chromium with different valences are elucidated in details. Finally, some unresolved problems and research prospect are discussed. Therefore, this review is meaningful to propose a feasible remediation strategy for chromium pollution.
Keywords: Environmental science chromium speciation redox reaction photochemistry
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