徐州市北郊农业土壤重金属污染评价

Evaluation to heavy metals pollution in agricultural soil in northern suburb of Xuzhou City

摘要: 研究评价徐州市北郊农业土壤重金属污染状况结果表明，该区农业土壤中Cu、Cd、Pb、Zn和Cr 5种重金属平均含量均高于土壤背景值，其农业土壤Cd、Cr为重污染，土壤Zn为污染警戒级(尚清洁水平)，其他2种元素为安全级(清洁水平)，其综合污染指数为Cr＞Cd＞Zn＞Cu＞Pb。

Abstract: The situation of soil contamination with heavy metals in agricultural soil in the northern suburb of Xuzhou City was studied. The results indicate that the average contents of heavy metals(Cu, Cd, Pb, Zn, Cr) in the soil exceed the background values. The soil has been seriously contaminated with Cd and Cr. Pollution of Zn is at the warning-grade, while others are at the safe-grade. The order of integrated contamination index is Cr＞Cd＞Zn＞Cu＞Pb.