【摘要】 通过在阜阳市城市规划区进行现场调查采样与测试分析,研究了该地区0～20cm表层土壤中7种典型重金属的累积状况,并采用污染指数法对土壤重金属的污染状况进行了评价。结果表明:参照安徽省土壤背景值,阜阳市城区土壤中Pb积累明显,超过土壤背景值的215.67%;单项污染指数评价结果显示,Hg污染最严重,Zn污染最弱;尼梅罗综合污染指数评价结果显示,研究区各功能区土壤重金属综合污染指数排序为交通区>工业区>居住区>公园区,且交通区和工业区达到了重度污染级别。更多还原

【Abstract】 The accumulation characteristics of Cu, Pb, Zn, Cr, Cd, As and Hg in 0～20 cm topsoil are studied by means of field sampling and laboratory detection in Fuyang urban planning area. This paper evaluates the pollution status of those heavy metals by using the pollution index method based on the background levels of heavy metals in topsoil of Anhui Province. The results show that the concentrations of Pb in urban topsoil accumulate significantly, and its average contents exceed corresponding standard levels by 215.67%, with the comparison to the concentrations of soil elements in Anhui Province. The evaluation on characteristics of heavy metal pollution in terms of area distribution by using single contamination index method indicates that Hg pollution is the most serious, and Zn pollution is the least serious. Comprehensive contamination index evaluation results show that the sorts of soil pollution index in functional areas are: transportation district > industrial urban area > residential area > park district. The transportation district and industrial urban area are both severely polluted.更多还原