某锑矿区土壤重金属污染及潜在生态风险评价

摘要

To study the status of soil quality in an antimony mine, soil samples were col ected from different regions and the elements' contents of Sb, Cd, Cr, Cu, Zn, Pb, Hg, Ni and As were analyzed using single factor pol ution index, Nemerow index and potential ecological risk index. The heavy metal contamination of soils were evaluated. The results showed that Nemerow index for each sampled point was less than 0.7, meaning a clean state. When potential ecological risk assessment was con-ducted, the sampled point was less than 150, belonging to light pol ution.%为研究某锑矿区土壤质量现状，对锑矿区土壤进行布点取样，分析了 Sb、Cd、Cr、Cu、Zn、Pb、Hg、Ni、As 9种元素含量，并运用单因子污染指数、内梅罗指数及潜在生态风险指数对土壤重金属污染状况进行了评价。结果表明，采用内梅罗指数法对该锑矿区土壤重金属污染程度进行评价时，各采样点的内梅罗指数均小于0.7，属清洁状态；采用潜在生态风险指数法对该锑矿区土壤重金属污染情况进行潜在生态风险评估时，各采样点综合潜在生态风险指数均小于150，属轻度污染。