桂林市某蔬菜种植基地重金属污染调查及分析

通过对桂林市某蔬菜种植基地灌溉水、土壤与蔬菜中重金属的测定,结合国家农灌水、土壤和食品卫生标准,分析了该区Cu、Pb、Zn、Cd污染状况。经测定分析,该区灌溉水质达到了国家三类水质标准;土壤中重金属含量普遍超过背景值,但达到了国家土壤环境质量标准;蔬菜中的重金属含量符合国家无公害蔬菜的标准。结果表明,该区尚未受到重金属污染,符合无公害食品种植基地要求。

Heavy Metal Pollution in Vegetable Plantation in Guilin

Concentration of Cu,Pb,Zn and Cd in irrigation water,soil and vegetable was determined to evaluate heavy metal pollution in vegetable plantation of Guilin City,Guangxi Province.It was found that irrigation water quality met class III of irrigation water quality standard,and heavy metal concentration in soil was higher than background value,but satisfying national standard.Heavy metal content in vegetable met safety requirement for non-pollution vegetable as well.Results showed that the vegetable plantation is not polluted by heavy metals,and eligible for growing non-pollution vegetables.