摘要
为研究土壤重金属的污染状况,从重庆市某铬污染场地土壤中采集54份样本检测分析了其Cr、Cu、Zn和Pb元素含量。结果表明:表层土壤样品中的重金属Cr、Cu、Zn、Pb的平均含量分别为3 370.8,58.0,36.1,112.4 mg/kg。该场地土壤属于重度重金属污染,潜在生态危害处于很强危害程度,各重金属的潜在生态风险指数大小顺序为:Cr>Pb>Cu>Zn。其中,Cr的影响占绝对主导地位。研究结果可为该废弃场地的治理修复和再利用提供理论依据。
In order to study soil pollution by heavy metals, 54 soil samples containing heavy metal residues from a chromium contaminated site in Chongqing were collected to analyze the content of Cr, Cu, Zn and Pb elements. The results showed that the concentrations of Cr, Cu, Zn and Pb at surface soils were 3370. 8, 58. 0, 36. 1, 112.4 mg/kg, respectively. This site was heavily polluted by heavy metals and has a strong potential ecological risk. The potential ecological risk indexes rank as follows, Cr 〉 Ph 〉 Cu 〉 Zn, Cr is the primary risk factor. The research results would provide theoretical foundation for the remediation and reuse of this abandoned site.
出处
《四川环境》
2017年第2期81-85,共5页
Sichuan Environment
关键词
土壤污染
重金属
六价铬
污染评价
风险指数
Soil contamination
heavy metal
chromium （VI）
pollution assessment
risk index
