地下水中砷元素的形成及其控制因素

研究了长江中下游地区和吉林省地区地下水中砷元素形成和主要控制因素及其分布规律。结果表明,地下水中砷主要以H_3ASO_3、H_2AsO_4~-、HA_3O_4~(2-)等形式存在。它的形成和分布与含水介质及其上覆土层的砷含量、地下水的酸碱度、地下水的迳流条件、氧化还原环境、有机物质及铁锰等有密切的关系。

The Formation of As Element in Groundwater and the Controlling Faector

This paper studied with main controlling factors of the formation of As element in groundwater and its distributing law in the Region of the Middle and Lower Reaches of the Yangtze River and in Jilin province Region. The result shows that the As in the groundwater mainly exists of H3AsO3,H2AsO4- ,HAsO42- etc.Its formation and distributing of the As in groundwater is closely relative to the content of aqueous medium and the Superincumbent soil the acidity - akalinity and the run - Off Condition of groundwater, environment of the ocidation and reduction,organic matter,Fe and Mn grade.