淀山湖沉积物中硒的存在形态及分布特征

Selenium Species and Distribution Characteristics in Dianshan Lake Sediment

对淀山湖沉积物中硒的存在形态、水平分布及垂直分布进行了探讨,研究了在自然条件下沉积物中硒的分布特征。结果表明淀山湖沉积物中硒的有机物—硫化物结合态及元素态是主要的存在形态,占33％～57％,且各形态硒的分布与环境因素密切相关。

The horizontal and verticle distribution of various forms of selenium in Dianshan Lake sediment have been studied. Discussion on natural environmental factors and distribution characteristics of selenium species in sediment were presented. It was found that they were mainly in the forms of element, organic and sulfide bounded, which accounted for 33%-57% of total selenium. The distribution of selenium species was related to the environmental factors.