河南省几个重点城市蔬菜基地的土壤重金属状况调查

A Survey on Soil Heavy Metals in Vegetable Bases in Main Cities of Henan Province

通过对郑州、洛阳、焦作、平顶山几个重点城市的蔬菜基地土壤安全性调查研究以及对比分析,发现耕层土壤中重金属含量有明显超标现象,主要是平顶山和巩义的镉超标以及洛阳的汞超标。通过对耕层和亚耕层土壤的重金属含量之间对比分析,重金属镉、锌、铜、铅、汞等元素明显在耕层富集。

A survey and comparative analysis on the soil security of vegetable bases in Zhengzhou, Luoyang,Jiaozuo and Pingdingshan etc. of Henan province were carried out. It was found that the content of heavy metals in the topsoil is higher than the national standard. The contents of Cd exceeded the standard in Gongyi and Pingdingshan,and the contents of Hg exceeded the standard in Luoyang. The comparative analysis among the contents of heavy metals in topsoil and sub-soil indicated that the heavy metals Cd,Zn,Cu,Pb,and Hg were obviously enriched in the topsoil.