期刊论文

中文

环境科学与技术

1003-6504

2022

45

2

156-164

10.19672/j.cnki.1003-6504.2280.21.338

湖南省自然科学基金（2020JJ6059）；

本校为第一机构

为探明湖南省国控背景点表层土壤重金属污染状况,文章以该省361个国控背景点表层土壤样品为研究对象,采用单因子污染指数法、内梅罗污染指数法及《土壤环境质量农用地土壤污染风险管控标准(试行)》(GB 15618-2018)对土壤中镉(Cd)、汞(Hg)、砷(As)、铅(Pb)、铬(Cr)、铜(Cu)、镍(Ni)、锌(Zn)的污染程度进行了评价,利用相关性法与主成分分析法对土壤重金属进行来源解析。结果表明:(1)土壤中Cd、Hg、As、Cu、Pb、Cr、Zn、Ni均值含量分别为0.38、0.160、18.6、31.9、39.5、87.1、102、33.6 mg/kg;(2)PN结果显示,受重金属重度污染样品比例依次为水田(48.8%)>园地(47.4%)>荒草地(44.5%)>旱地(35.1%)>林...

In order to find out the pollution status of heavy metals in surface soil of state-controlled spots in Hunan province, topsoil samples from 361 state-controlled background points in a certain province were studied. The single factor pollution index method(Pi), Nemerow pollution index method(PN) and Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land(GB 15618-2018) were used to assess the pollution status of cadmium(Cd), mercury(Hg), arsenic(As), lead(Pb), chromium(Cr), copper(Cu), nickel(Ni), zinc(Zn) in the samples. Source analysis of heavy metals in s...