期刊论文

Contamination Characteristics and Risk Assessment of Heavy Metals in Soil Around a Centralized Drinking Water Sources of Changsha City

中文

中国环境监测

1002-6002

2021

37

04

118-127

10.19316/j.issn.1002-6002.2021.04.16

湖南省自然科学基金（2018JJ5015）； 长沙市科学技术局项目（kq1801021）；

本校为第一机构

以长沙某河库兼用型饮用水水源地一、二级保护区土壤为研究对象,于2018年8月采用网格布点法在一级和二级保护区分别布设3个和7个采样点,在水源地历史采样区布设5个采样点,探究土壤中Cd、Pb、Cr、Cu、Zn、Ni、Hg、As的含量分布及污染水平.结果表明:土壤中As、Cd、Cr、Cu、Hg、Ni、Pb、Zn的含量均值分别为46.56、4.90、81.87、46.64、0.19、30.11、75.11、237.93 mg/kg.重金属元素含量均值超过农用地污染风险筛选值的样品占比排序为Cd(86.7％)＞Zn(60％)＞As(53.3％)＞Cu(6.7％)=Pb(6.7％).土壤中 As、Cd、Cr、Cu、Hg、Ni、Pb、Zn 的单因子污染指数分别为 1.55、16.34、0.41、0.47、0.08、0.30、0...

Taking the soil in the first and second level protection areas of a drinking water source for both river and reservoir use as the research object,this study aims to explore the content distribution of Cd,Pb,Cr,Cu,Zn,Ni,Hg and the soil pollution degree.The grid layout method was adopted in August 2018 to set up 3 and 7 sampling points in the first and second level protection areas respectively,and 5 sampling points were set up at historical points of drinking water source.The results showed that the mean values of As,Cd,Cr,Cu,Hg,Ni,Pb,Zn in the soil were 46.56,4.90,81.87,46.64,0.19,30.11,75.11,...