金矿区尾矿渣周边土壤的重金属污染评价研究

发布时间：2018-04-05 23:26

本文选题：尾矿渣　切入点：重金属污染　出处：《中国矿业》2017年05期

【摘要】：在小秦岭金矿区内选取姚青村、来福沟和毛沟三个具有代表性研究区,采集研究区内尾渣堆及渣堆周围农田样品30个,测定了重金属Cr、Ni、Cu、Cd、Zn、As、Pb含量。对土壤样品重金属测定结果分别采用地累积污染指数法和潜在生态危害指数评价法进行评价,结果显示:As不是矿业活动污染的典型金属;姚青村和来福沟重金属典型污染物为Cu、Zn、Cd、Pb。采用地累积污染指数法评价,姚青村和来福沟的Pb属于极严重污染,而Cr、Ni均属无污染。采用潜在生态危害指数法进行评价,毛沟研究区属轻微生态危害,姚青村和来福沟生态风险程度均属极强,贡献率大的元素主要为Pb和Cd。
[Abstract]:Selection in small gold mine area of Qinling Mountains Yao Qing Cun, Fu Mao Gou and Gousan representative of the study area, collected in the study area of tailings heap and heap farmland around 30 samples, the determination of heavy metals of Cr, Ni, Cu, Cd, Zn, As, Pb content of soil samples. The results were used in the determination of heavy metals the accumulation of pollution index and potential ecological risk index evaluation method. The results show that As is not a typical metal mining pollution; typical pollutants and heavy metals for Yao Qing Fu Gou Cu, Zn, Cd, Pb. by the accumulation of pollution index, and the Pb Fu gou Yao Qing Cun are extremely serious pollution, and Cr, Ni are no pollution. The potential ecological risk index method to evaluate the Maogou study belonged to slight ecological harm, Yao Qing Cun and live ditch ecological risk degree are very strong, the contribution rate of the main elements are Pb and Cd.

【作者单位】：国土资源部退化及未利用土地整治工程重点实验室;陕西省土地工程建设集团;陕西省土地整治工程技术研究中心;陕西地建土地工程技术研究院有限责任公司;
【基金】：陕西省重点科技创新团队计划项目资助(编号:2016KCT-23)
【分类号】：X753;X825

【相似文献】