Environmental pollution and risk assessment of trace metals in top soils of Xuejiping Mine in Xichang City are studied. Soil samples are collected around the mine areas. Seven trace metal elements (Hg, Cd, Pb, Cr, Cu, Zn, and As) are analyzed to evaluate the pollution status using chemical speciation, geo‐accumulation index (I_geo), and the potential ecological risk index (RI). Results indicate that concentrations of trace metal elements in the mining area exceed soil background values in Yunnan Province. Trace metal elements are ranked according to the I_geo evaluation results (indicating the degree of pollution), as: Pb > As > Cu > Hg > Zn > Cd > Cr; trace elements are ranked as $E_{\mathrm{r}}^i(\mathrm{Hg})$ > $E_{\mathrm{r}}^i(\mathrm{As})$ > $E_{\mathrm{r}}^i(\mathrm{Cd})$ > $E_{\mathrm{r}}^i(\mathrm{Pb})$ > $E_{\mathrm{r}}^i(\mathrm{Cu})$ > $E_{\mathrm{r}}^i(\mathrm{Cr})$ > $E_{\mathrm{r}}^i(\mathrm{Zn})$ using the ecological risk index. These results indicate that the surface soil of the Xuejiping mining area is moderately polluted by trace metal elements. Therefore, effective measures can be taken to control the trace metals pollution in the mining area (especially for Pb and Cu).

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云南省雪吉坪矿区土壤微量金属污染评价

研究了西昌市雪吉坪矿表层土壤环境污染及微量金属的风险评价。在矿区周围收集土壤样品。分析了七个痕量金属元素（Hg，Cd，Pb，Cr，Cu，Zn和As），以使用化学形态，地质累积指数（I _geo）和潜在生态风险指数（RI）评估污染状况。结果表明，该矿区微量金属元素的浓度超过了云南省的土壤本底值。痕量金属元素根据I _geo评价结果（表明污染程度）进行排序，_依次为：Pb> As> Cu> Hg> Zn> Cd> Cr； Pb> As> Cu> Hg> Zn> Cd> Cr； Pb> As> Cu> Hg> Zn> Cd> Cr。痕量元素的排名为${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{汞柱}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{作为}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{光盘}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{铅含量}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{铜}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{铬}）$ > ${Ë}_{\mathrm{[R}}^{\mathrm{一世}}（\mathrm{锌}）$使用生态风险指数。这些结果表明，薛集坪矿区表层土壤被微量金属元素中等污染。因此，可以采取有效措施来控制矿区中的痕量金属污染（尤其是铅和铜）。