京杭大运河镇江段近岸土壤重金属含量与空间分布特征

Heavy metal concentrations and their spatial distribution of the near-shore soils in Zhenjiang Section of the Beijing-Hangzhou Grand Canal

通过多目标区域地球化学调查方法,研究了京杭大运河镇江段流域近岸土壤中重金属元素的含量、来源及空间分布特征。结果表明:重金属含量总体较低,仅局部地区存在重金属污染,其中Cr、Ni、As未见明显污染,Cu、Pb、Zn、Hg、Cd在局部地区存在不同程度的污染,尤其是Cd污染最严重;污染区域主要位于辛丰镇和丹阳城区附近,污染源主要为附近的金属制品业和钢铁厂。

In this paper,the content,source and spatial distribution of heavy metals in the coastal soil of the Zhenjiang section of the Beijing-Hangzhou Grand Canal were studied by multi-objective regional geochemical survey.The results showed that the content of heavy metals in the soil near the study area was generally low,and heavy metal pollution was only found in some areas,among which Cr,Ni and As pollution were not serious and there was Cu,Pb,Zn,Hg and Cd pollution in different degrees in some areas,especially Cd pollution.The pollution areas of the coastal soil in the Zhenjiang section of the Beijing-Hangzhou Grand Canal are mainly located near Xinfeng Town and Danyang City,and the pollution sources are mainly the metal products industry and steel works nearby.