河南省农业土壤镉元素污染现状及来源分析

经济的高速发展同时也带来了环境损害,重金属污染特别镉元素污染环境中毒性最强的元素之一,由于镉不易迁移、不可逆转、难以修复,是目前土壤环境研究的难点.河南省作为中国的农业大省,其产地土壤的重金属安全关乎全省和全国人民的粮食安全.本文利用现状调查和化验分析等手段,查明了全省农用地土壤Cd元素含量均高于河南省A层土壤重金属含...

Pollution status and source analysis of cadmium in agricultural soil of Henan Province

The rapid economic development has also brought about environmental damage. Heavy metal pollution, especially cadmium, one of the most toxic elements in the environment, is not easy to transfer, irreversible and difficult to repair, it is a difficult point to study soil environment at present. As a major agricultural province in China, the safety of heavy metals in the soil of Henan Province is closely related to the food security of the whole province and the whole people. By means of Investigation and analysis, it was found that the content of CD in agricultural soil was higher than the background value of a soil layer in Henan province, and the surface soil was polluted seriously by CD, based on the analysis of the main ways of cadmium pollution in agricultural soil, some suggestions are put forward to reduce the cadmium pollution in the soil, this study provides a basis for the remediation and treatment of heavy metal cadmium contaminated soil.