长江中下游地区地下水中Cd元素的背景特征及形成

根据国家科技攻关项目长江中下游重点地区地下水环境背景值调研的研究成果，论述了长江中下游地区地下水镉元素的背景特征及其与地下水的酸碱度、氧化还原环境的密切关系。

Background Properties and Formation of Cd Element in Groundwater in Middle and Lower Yangtze River Reaches

In search of high grade groundwater source with low Cd content has become an important way of enhancing human health,so the study of background properties and controlling factors for migration enrichment of Cd element are of important practical significance.Based on the research project of groundwater environment in the middle lower reaches of the Yangtze River,the author describes the background properties of Cd in groundwater and its close relationship with acid alkalinity,oxidation and reduction environment in the groundwater.It is concluded that the content of Cd element in the groundwater of Boyang Lake exceeds that in both east Jianghan Plain and south Yangtze River delta,and the Cd content in east Jianghan Plain exceeds that in south Yangtze River delta.