渭南市近郊菜地土壤重金属污染分析与评价

摘要

The soil vegetable growing areas located in Weinan suburban area were researched, the heavy metal content of Hg, Cd, Pb were measured in the soil of the study areas, and the pollution conditions were analyzed and evaluated on the basis of rele⁃vant standard. The results showed that Weinan suburban soil vegetable growing areas are correspond with the secondary soil environ⁃mental quality standards and there was no heavy metal ( Hg, Cd and Pb) pollution, but the content of Hg and Pb exceeds the green food producing area environment quality standards.%为了解渭南市土壤环境质量的变迁，对渭南市城郊蔬菜种植区土壤中Hg、Cd、Pb三种重金属含量进行测定，据相关土壤质量标准按单因子污染指数法和内梅罗综合污染指数法对土壤质量进行评价分析。结果表明，渭南市近郊菜地土壤符合土壤环境质量二级标准，但Hg、Pb受城市化进程影响已超过绿色食品产地环境质量标准要求。