2017-2021年河南省许昌市农村土壤重金属含量监测  

Monitoring heavy metal content in rural soil of Xuchang city,Henan province from 2017-2021

作　　者：刘克克 高丽红[1] 俎志平[1] 贾桂华[1] LIU Keke;GAO Lihong;ZU Zhiping;JIA Guihua(Xuchang Center for Disease Control and Prevention,Xuchang 461000,China)

机构地区：[1]许昌市疾病预防控制中心,河南许昌461000

出　　处：《现代疾病预防控制》2023年第10期767-769,786,共4页MODERN DISEASE CONTROL AND PREVENTION

摘　　要：目的监测许昌市农村土壤中铅、镉和铬含量,评价农村土壤的重金属污染状况,为相关监督部门制定政策提供数据支持和科学论证。方法根据河南省农村环境卫生监测工作方案要求,2017-2021年每年在许昌市长葛市和襄城县分别选择5个乡镇的4个村,共40个行政村作为采样监测点,对土壤中重金属铅、镉和铬进行检测,采用GB15618-2018《土壤环境质量农用地土壤污染风险管控标准(试行)》对土壤中重金属污染现状进行评价。结果2017-2021年共检测样本200份,铅、镉和铬含量范围分别为:16.8~93.5、0.050~1.590、36.4~95.8 mg/kg。其中铅、铬的含量小于国家限量标准,镉含量有10份样品超标,超标率为5.0%。不同年度间铬含量差异有统计学意义(F=8.892,P<0.05)。结论2017-2021年许昌市两个监测县(市)土壤均未受到重金属铅、铬的污然染,但部分地区存在镉污染,应进一步加强重金属指标镉的监测,减少土壤镉超标带来的重金属污染危害。Objective To monitor the content of lead,cadmium and chromium in rural soil of Xuchang city,and evaluate heavy metal pollution in rural soil for providing data support and scientific demonstration of policy-making for relevant supervision department.Methods During the period of 2017-2021,according to the requirements of Henan Rural Environmental Health Monitoring Work Plan,two counties of Changge and Xiangcheng in Xuchang city were selected;of the two selected counties,5 townships were selected from each counties;of the selected townships,4 villages were selected from each selected toenship.A total of 40 villages were selected as monitored sites,and 1 soil sample was collected from each monitored site to detect lead,cadmium,chromium in the soil.The status of heavy metal pollution in soil was evaluated according to the Soil Environmental Quality Standard for Risk Control of Agricultural Soil Pollution(Trial)(GB 15618-2018).Results During 2017-2021,a total of 200 samples were monitored,lead,cadmium and chromium contents ranged from 16.8 to 93.5 mg/kg,0.050 to 1.590 mg/kg,and 36.4 to 95.8 mg/kg,respectively.The contents of lead and chromium were less than national limit standards,and cadmium content in 10 samples exceeded the standard,with an exceeding-standard rate of 5.0%.There was statistical significance in the difference of chromium content by year(F=8.892,P<0.05).Conclusions During 2017-2021,the soil of the two monitored counties was not contaminated by heavy metals lead and chromium,but cadmium pollution existed in some areas.It is necessary to further strengthen the monitoring of heavy metal index of cadmium for reducing the harm of heavy metal pollution caused by exceeding-standard cadmium in soil.

关 键 词：农村土壤 重金属污染 铅 镉 铬 

分 类 号：X53[环境科学与工程—环境工程] X820.4