【摘要】 目的了解内蒙古获各琦铜矿周边土壤重金属污染情况。方法于2014年7月,采集该矿区周边土壤样品,并测定As、Cu、Pb、Zn的含量,运用地质累积指数方法对重金属污染进行评价。结果在12件土样中,As均超标,其次是Cu(超标率为41.7%),Zn的超标率仅为8.3%,而Pb均未超标。土壤受As的污染最为严重,均属极强污染;受Cu的污染较重,在矿区的西北方污染达到极强污染,东南方为中度污染到强污染,其余为无污染到中度污染;而Pb、Zn属无污染到中度污染。土壤中Zn含量与Pb、Cu含量间、Pb含量与Cu含量间均呈正相关(P<0.01),而Pb、Zn、Cu含量与p H值间均呈负相关(P<0.05)。结论获各琦矿区周边土壤受到As、Cu的污染较为严重。更多还原

【Abstract】 Objective To understand the heavy metal pollution situation of soil in Huogeqi copper mine in Inner Mongolia.Methods The samples were collected in July,2014,and the contents of Pb,Zn,Cu,As in soil were determined. Then the geoaccumulation index was used for heavy metal assessment. Results The exceeding standard rates were 100%,41.7% and8.3% for As, Cu and Zn in 12 soil samples respectively,while the content of Pb was qualified.The pollution of As was the most serious, at the extremly heavy contamination level. Then the soil was more seriously polluted by Cu, at extremly heavy contamination level in the northwest of the mine, and it showed moderate or heavy contamination level in the southeast, the rest was at no contamination and moderate contamination. The soil samples showed no contamination and moderate contamination for Pb and Zn. Moreover,correlation analysis indicated that significant correlations existed among Pb,Cu and Zn,significant negative correlations existed among Pb,Zn,Cu and p H in copper mine soil. Conclusion The soil in the copper mine of Huogeqi has been contaminated by As and Cu.更多还原