黄石市基本农田土壤重金属污染调查研究

通过对黄石市基本农田土壤重金属Cu、Pb、Zn、Cd、Hg的污染调查监测，结合土壤环境质量标准和国家绿色食品发展中心提供的土壤分级标准进行评价。结果表明：整体上黄石市的基本农田土壤受到了轻度污染，其中Pb、Zn元素不存在超标现象，为清洁水平；Cd超标率为8％，Hg超标率为13％，均为轻度污染水平；Cu超标率为40％，综合污染指数为2．07，达到了中度污染水平。Cu、Cd的变异系数在大冶市变异较大，Cu、Hg的变异系数在阳新县较大，说明这三种元素在不同样点间存在较大差异。分析超标的样点分布规律，发现超标的样点主要分布在工矿企业周围的农田。

Study on the Conditions of Heavy Metal Contamination of Basic Farmland Soil of Huangshi City

To evaluate according to the checking of heavy metal Cu,Pb,Zn,Cd and Hg pollution of the soil from basic farmland of Huangshi,and also according to the soil environment quality standard,and the soil grading standards provided by national green food developing center.the result shows that the soil of basic farmland of Huangshi has been polluted lightly,among which the Pb,Zn elements are not over the standard(is the cleanness level);The over standard rates of Cd was 8%,The over standard rates of Hg was 13%,th...