自然环境中砷的迁移转化研究进展

Progress of Investigations on Transformation and Distribution of Arsenic in Natural Environment

砷污染严重威胁着人类健康和生态系统安全,已成为全球性环境问题,砷在环境中的迁移转化及形态分布研究受到了人们的普遍关注。本文对近年来有关砷在环境中的迁移转化规律的研究进行了综述,重点论述了砷在自然水体中的迁移、在不同的pH和氧化还原条件下的环境行为,分析了在特定环境下砷的各种形态与不同的矿物质元素(如Fe,Mn,S等)的反应过程。最后,提出了今后值得进一步研究的重要方向,以为环境中砷污染的修复和治理提供一定的指导和参考。

Arsenic pollution shows great risks on human health and natural ecosystem.It has become a worldwide challenge to environment systems.Therefore,researches on the transformation,distribution and attribution of arsenic have attracted a lot of attentions.In this paper,the progress of the transformation and attribution of arsenic in the latest decades were summarized.The transformation of arsenic in natural water and the environmental behaviors of arsenic under different circumstances of pH and Eh were reviewed.The reaction process of arsenic with different mineral elements such as Fe,Mn,and S were also discussed.Some valuable suggestions about further study in this field were given out,which will be beneficial for remediation of arsenic pollution and related environment management.