生态环境学报2018，Vol.27Issue(6)：1153-1159,7.DOI:10.16258/j.cnki.1674-5906.2018.06.021
上饶市某铜矿废弃地土壤重金属污染特征及健康风险评价
Characteristics and Health Risk Assessment of Heavy Metals in Polluted Abandon Soil of Shangrao, Jiangxi
摘要
Abstract
This paper attempts to examine the characteristics, sources and health risks of heavy metals in copper mine wasteland. It took the waste soil of Shangrao copper mine as the research object, and 50 soil samples were collected. The contents of Cu, Cd, Cr, Pb and Zn in soils were measured by atomic absorption spectrometry and the physical and chemical properties were also tested. Subsequently, the correlation between the composition of heavy metal and the physico-chemical properties in Shangrao copper mine wasteland were analyzed. The pollution index evaluation model (including single factor index and Nemerow index) and the health risk assessment model were used to evaluate the soil heavy metal pollution status and human health risk in the mining area. The results showed that the contents of Cu and Cd in soil were far beyond the national secondary standard of soil environment and the background value of soil in Jiangxi Province. And the contents of Zn, Pb and Cr in soil also exceeded the background of Jiangxi Province soil. The coefficients of variation of Cd, Pb, Cr, Cu and Zn were 95%, 98%, 71%, 60% and 18%, respectively. The results of cluster analysis showed that Cd was more significantly influenced by physical and chemical properties. The principal component analysis showed that the Cd in soil samples was greatly influenced by TN. Each heavy metal was influenced by physical and chemical properties in varying degrees, and the proportion of different principal components was different, indicating that they had homology. Meanwhile, The results of pollution index evaluation showed that the pollution of Cu and Cd was the most serious, and the pollution of Cr was relatively light among the five kinds of heavy metals. Finally, the results of health risk assessment showed that the risk of non-carcinogenic exposure of five kinds of heavy metals to adults and children were both ranked as follows:Cr＞Cd＞Pb＞Cu＞Zn, and Cr had a definite health risk to the surrounding residents. Our findings are expected to provide a theoretical basis for the prevention and control of heavy metal pollution in mine polluted mining and wasteland.关键词
铜矿/废弃地/重金属/指数污染评价/健康风险评价Key words
copper mine/abandoned land/heavy metals/index pollution assessment/health risk assessment分类
资源环境引用本文复制引用
陶美霞,胡虎,胡兰文,陈明,杨泉,李凤果,师艳丽..上饶市某铜矿废弃地土壤重金属污染特征及健康风险评价[J].生态环境学报,2018,27(6):1153-1159,7.基金项目
国家自然科学基金项目(51664025) （51664025）
