摘要
对昆明市蔬菜及其土壤中铅、镉、铜和锌含量水平进行了初步的调查并对其土壤污染进行了评价 ,结果表明 :蔬菜土壤重金属Pb、Cd、Cu、Zn均存在一定程度的污染 ,其中Pb、Zn为轻污染 ,Cd、Cu为中污染 ,土壤重金属综合评价为中污染。蔬菜可食部分Pb、Cd、Zn的含量均超过国家食品卫生标准和绿色蔬菜标准 ,依次为Pb、Cu、Cd、Zn。
The paper discussed the pollution of Pb, Cd, Cu and Zn in vegetable-farm soil and vegetable through field investigation method. The results showed that: Using pollution index methods, the single factor pollution of Pb, Zn in soil is low-degree, and Cd, Cu is middle-degree. The comprehensive pollution degree is middle. According to national standard values of food in China, there are some samples Pb, Cd, Cu and Zn concentration in food part of vegetable were over standard values respectively. But the ratio of over standard values of Pb concentration is highest. The Pb pollution in vegetable may come from the automobile gas along road.
出处
《云南环境科学》
2003年第B03期55-57,共3页
Yunnan Environmental Science
