某锑矿区土壤重金属污染及潜在生态风险评价

Heavy Metal Pollution in the Soil and Potential Ecological Risk Assessment of an Antimony Mine

为研究某锑矿区土壤质量现状,对该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,并以单因子污染指数、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,属安全状态;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。

To study the status of soil quality in an antimony mine soil distribution was sampled and the elements contents of Sb, Cd, Cr, Cu, Zn, Pb, Hg, Ni, As were analyzed using single factor pollution 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 is less than 0.7, meaning a clean state. When potential ecological risk assessment was conducted, the sampled point was less than 150, belonging to light pollution.