摘要
为摸清国家级重金属重点防控区大冶市土壤重金属污染状况,选取大冶市及其周边地区作为研究区,利用空间分布分析、来源分析和污染状况评价等方法,探究研究区不同区域土壤重金属的空间分布特征及其来源。结果表明:研究区土壤中重金属元素As、Cd、Pb、Zn、Hg、Cu的平均含量明显高于湖北省土壤环境背景值,土壤中重金属元素As、Cd、Zn、Cu的平均含量普遍超出《土壤环境质量农用地土壤污染风险管控标准(试行)》;研究区不同区域间土壤中重金属元素含量有明显的差异,呈现出东西港区域>冶炼厂区域>大冶湖区域的趋势;研究区土壤中重金属元素As、Cd、Zn含量的高值区分布在东西港区域,土壤中重金属元素Cu、Pb、Hg含量的高值区分布在有色冶炼厂区域和东西港区域;研究区土壤重金属的来源主要是该地区有色金属冶炼厂等工业生产排放的废水和废气造成的东西港区域的水型污染和冶炼厂区域的气型污染。
In order to find out the situation about Daye City,a national heavy metal prevention and control area,by selecting Daye City and surrounding areas as the research area,this paper uses spatial distribution analysis,source analysis and pullution status assessment method to explore the spatial distribution and pollution sources of the soil heavy metal in the research area.The results show that the average content of As,Cd,Pb,Zn,Hg,and Cu is significantly higher than the background values of the soil environment in Hubei Province,and the average content of As,Cd,Zn,and Cu generally exceeds the Soil Environmental Quality—Risk Control Standard for Soil Contamination of Agricultural Land.There are obvious differences in the content of heavy metals in the soil between different regions,showing a trend of East-West port area>smelter area>Daye Lake area.The high-value areas of As,Cd and Zn content are distributed in the East-West port area;the high-value areas of Cu,Pb and Hg content are the non-ferrous smelter area and the east-west port area.In the study area,the source of soil heavy metals is mainly from water-type pollution of the East-West port area and the gas-type pollution of the smelter area caused by waste water and waste gas discharged from industrial production such as nonferrous metal smelters in the area.
作者
杨文聪
祁士华
邢新丽
YANG Wencong;QI Shihua;XING Xinli(State Key Laboratory of Biological Geology and Environmental Geology,China University of Geosciences(Wuhan),Wuhan 430074,China;School ofEnvironmental Studies,China University of Geosciences(Wuhan),Wuhan 430074,China)
出处
《安全与环境工程》
CAS
北大核心
2020年第4期121-127,142,共8页
Safety and Environmental Engineering
基金
湖北省环保科研项目(KZ18Z3070)。
关键词
土壤
重金属污染
空间分布
来源分析
大冶市
soil
heavy metal pollution
spatial distribution
source analysis
Daye City
