濮阳工业园区土壤重金属背景值及质量评价

Background Value of Soil Heavy Metals in Puyang Industrial Park and Quality Assessment

为了研究濮阳工业园区土壤重金属背景值,采集了该园区及周边土壤46个样品,测定了土壤中重金属Cu、Zn、Pb、Cr、Cd和Ni的含量,并采用污染负荷指数法和潜在生态危害指数法对土壤质量进行了评价。结果表明:工业园区土壤中Cu、Zn、Pb、Cr、Cd、Ni的背景值分别为36.2、118、49.2、40.6、0.125、15.3 mg/kg;Cu、Zn、Pb、Cd的含量高于河南省土壤重金属背景值;Pb为极强污染,Cu、Zn、Cd为中等污染,重金属污染程度从重到轻的排序为Pb>Zn>Cu>Cd,表明濮阳工业园区土壤重金属具有轻微的潜在生态危害。

For further investigation of the ecological environment condition in the Puyang industrial park, 46 soil sample werecollect and analyzed. The experiment measured six kinds of heavy metals（Cu, Zn, Pb, Cr, Cd, Ni）in soil background value,and evaluated the soil quality by using the pollution load index and Potential ecological risk index methods. The results show thatthe average contents of Cu, Zn, Pb, Cr, Cd and Ni are 36. 2,118,49.2, 40.6, 0. 125, 15.3 mg/kg. The content of Cu, Zn,Pb, and Cd is higher than the standard of Henan. Lead （Pb） is listed as highly contaminated. Copper （Ca） , Zinc （Zn） andCadmium （Cd） is listed as the moderately pollution. The descending order for heavy metal pollution degree is Pb, Zn, Cu, Cd.From the results, this study shows that these soil heavy metals of Puyang industrial park have a slight potential ecological risk.