Evaluation of heavy metal contamination in agricultural topsoils in suburban Xuchang City, China
Evaluation of heavy metal contamination in agricultural topsoils in suburban Xuchang City, China
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DOI：
10.1007/s12665-015-4252-7
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发表时间：
2015-03
影响因子：
2.8
通讯作者：
Hui Yan;Shengyuan Yuan;Manyuan Li;J. Xiao
中科院分区：
文献类型：
--
作者：
Hui Yan;Shengyuan Yuan;Manyuan Li;J. Xiao
对许昌市郊区农田表层土壤中Mn、Cr、Ni、Cu、Pb和Zn的含量进行了分析。利用地积累指数、富集因子和综合污染指数评价了污染程度。根据浓度和指数的结果，锰，铬和镍表现出非污染水平和轻微的富集，很少或没有贡献的重金属污染。Cu、Pb、Zn表现为中度污染和富集，个别点位有中重度富集。人类活动的不同强度，如交通流量和工业工厂的数量，解释了采样点之间的污染水平。
Agricultural topsoils in suburban Xuchang City were analyzed to determine the concentrations of heavy metals (Mn, Cr, Ni, Cu, Pb and Zn). The contamination levels were evaluated using the geo-accumulation index, the enrichment factor and the integrated pollution index. According to the concentration and indices results, Mn, Cr and Ni exhibited non-contaminated levels and minor enrichment, with little to no contribution to the heavy metal contamination. Cu, Pb and Zn showed moderate contamination and enrichment, with moderately severe enrichment at several points. The variable intensities of human activities, such as the traffic flow and the number of industrial factories, explain the contamination levels between the sample sites.