山西省部分地区农用地土壤重金属污染物含量的测定与风险管控分析

Determination and Risk Control Analysis of Soil heavy Metal Pollutants in Agricultural Land in some Areas of Shanxi Province

农用地土壤健康状况是关乎民生的大事,按照国家“绿水青山就是金山银山”的要求,开展农用地土壤健康状况评估尤为重要。本研究选取了某地区12组样本,通过测定各样本中Ni、Cu、Zn、Cd和Pb的含量,对山西省部分区域内农用地土壤健康状况进行了评估。研究发现部分区域内Ni、Cu、Zn、Pb远低于《土壤环境质量农用地土壤污染风险管控标准(试行)》(GB 15618—2018)中规定的农用地土壤污染风险筛选值,符合国家土壤安全标准。然而对于Cd的测试表明,12组样品中有1组样品监测浓度为0.34 mg/kg,略高于国家农用地土壤污染风险筛选值0.3 mg/kg,可能存在着土壤污染风险,应当加强土壤环境监测和农产品协同监测,原则上应当采取安全利用措施。

Soil Health Status of agricultural land is a matter of people's livelihood.According to the national“Green Water and green mountains are mountains of gold and silver”,it is particularly important to carry out soil health status assessment of agricultural land.In this study,12 groups of samples were selected to assess the soil health status of agricultural land in some Areas of Shanxi Province by determining the contents of Ni,Cu,Zn,Cd and Pb in the samples.The results show that Ni,Cu,Zn and Pb in this area are much lower than the screening values of soil pollution risk in farmland stipulated in“Soil environmental quality,soil pollution risk management and control standards for farmland(trial implementation)”(GB 15618-2018),meet the national soil safety standards.However,the results of Cd test showed that one of the 12 groups of samples had a monitoring concentration of 0.34 mg/kg,which was slightly higher than the screening value of 0.3 mg/kg for soil pollution risk of national agricultural land,and there might be a risk of soil pollution,collaborative monitoring of soil Environmental monitoring and agricultural products should be strengthened and safe use measures should be taken in principle.