太湖沉积物中重金属的测定及环境意义

Determination of Heavy Metal Contents in the Sediments from Taihu Lake and Its Environmental Significance

通过对太湖地区水域湖泊沉积物中重金属含量的抽样测试 ,描述了太湖水域重金属(Ag、As、Cd、Cr、Cu、Hg、Ni、Pb、Zn等 )元素的污染状况及其分布。结果表明 :太湖沉积物中重金属含量北部明显高于东部。来自太湖北岸城镇和工业区的未处理工业及生活污水 ,对太湖北部水域造成的重金属污染程度远高于以养殖业为主的东太湖及湖心水域。

The pollution from the heavy metals (Ag, As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, etc.) to the water of Taihu Lake and the pollutant distributions were studied by analysis of these heavy metals in sediments from the lake's bottom. The analytical results show that the heavy metal contents in the sediments from the north part of the lake are much higher than that from the east and center parts of the lake. The heavy pollution from heavy metals in the north part has been proved to be due to the fact that a large amount of untreated industrial and domestic sewage are drained off to the Taihu Lake from the surrounding cities and industrial area in the north part. And less pollution in east and center parts of the lake is due to the fact that in this area breeding is the main industrial.