地下水砷污染分析  

Analysis on Arsenic Contamination in Groundwater

作　　者：丁爱中[1] 杨双喜[1] 张宏达[2] 

机构地区：[1]北京师范大学水科学研究院/水沙科学教育部重点实验室,北京100875 [2]中国矿业大学资源学院,北京100082

出　　处：《吉林大学学报（地球科学版）》2007年第2期319-325,共7页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(40202026);国际科技合作重点项目(2005DFA20900)

摘　　要：阐述了含砷黄铁矿等含砷矿物以及岩石矿物附着砷等天然来源,同时从气候、环境地质以及水化学环境等方面分析了砷在地下水中的迁移和富集规律。研究表明:干旱、半干旱地区、封闭的地形地貌、断裂凹陷等外部环境有利于高砷地下水的形成,同时含水介质性质、地下水径流条件以及地下水中pH值、Eh值、不同的无机和有机组分对砷在地下水中迁移富集起着重要作用。在此基础上从砷的“来源—影响因素—影响过程—高砷形成”角度提出了地下水砷污染的成因模式,对砷中毒病区的环境问题调查与地下水砷污染的防治具有重要参考价值。Arsenic contamination of groundwater is one of the most important reasons to endemic arseniasis in the world. The sources of arsenic, the processes of arsenic migration and enrichment in groundwater were analyzed, which showed that the environmental conditions are the key factors to arsenic enrichment in groundwater llke in the arid or semi-arid area, closed terrain and physiognomy and block-faulted depressions. Also the characteristics of water-bearing media, groundwater velocity, pH, Eh, organic contents in groundwater play great important role in arsenic migration and enrichment. A model was proposed to describe arsenic contamination of groundwater and its influencing factors controlling the processes of arsenic migration and enrichment, which can be used for the strategies making of arsenic contamination control in arseniasis areas.

关 键 词：地下水 砷污染 迁移 富集 

分 类 号：X523[环境科学与工程—环境工程]