|关键词: 潜在生态风险指数 垃圾填埋场 土壤污染 重金属
|Pollution Evaluation of Heavy Metals in Soil of Landfill Site Based on the Potential Ecological Risk Index Proposed by HAKANSON
ZHAO Xiao jian
Yangzhou Environmental Monitoring Central Station
|The pollution situation of heavy metals in soil of landfill site and its surrounding was evaluated with the method of potential ecological risk index proposed by Hakanson. The evaluation factor was expanded and the toxic coefficients and reference values of the various heavy metals were ascertained. The results showed that the risk level of Hg was more serious, followed by Cd， As， Ni， Cu， Pb， Co， Cr， Mn and Zn in the order. This study has certain guiding significance for risk assessment and ecological restoration of contaminated sites.
|Key words: potential ecological risk index landfill site soil contamination heavy metals