城市地质2024，Vol.19Issue(2)：167-175,9.DOI:10.3969/j.issn.2097-3764.2024.02.004
北京市昌平区南口镇土壤重金属污染风险评估及来源分析
Risk assessment and source analysis of heavy metals in soil,Nankou Town,Changping District,Beijing
摘要
Abstract
473 surface soil samples and 65 soil samples were collected from Nankou Town,Changping,to test for eight heavy metal elements including arsenic(As),cadmium(Cd),copper(Cu),chromium(Cr),mercury(Hg),lead(Pb),nickel(Ni),and zinc(Zn),as well as geochemical indicators such as aluminum(Al2O3),silicon(SiO2),and iron oxide(Fe2O3).Various pollution evaluation methods and statistical methods were adopted.Pearson correlation analysis and principal component analysis were used to assess the risk of soil heavy metal pollution and analyze the pollution sources.The results show that heavy metal Cd content is generally high;super screening value points are wide spread;some individual points exceed the screening values with Pb,Hg,Cr,Ni,Cu,and Zn;and mild or above pollution points exist with Cd,Hg,Pb,and Zn.Pearson correlation analysis and principal com-ponent analysis show that the sources of Cd,Hg,Zn are similar;the human contribution rate of Cd and Zn increased significantly from 1970 to 2021,and the average value is significantly higher than the background value in Beijing,indicating the presence of man-made pollution in the study area.关键词
南口镇/筛选值/背景值/地积累指数/人为贡献率/重金属污染评估/来源分析/主成分分析Key words
Nankou Town/screening value/background value/ground accumulation index/human contribution rate/heavy metal pollution assessment/source analysis/principal component analysis引用本文复制引用
贾唯远,刘清俊,刘芬芬,孟美杉,白江伟,顾海波,王天宇,罗伊..北京市昌平区南口镇土壤重金属污染风险评估及来源分析[J].城市地质,2024,19(2):167-175,9.基金项目
北京市昌平南口示范区地表基质调查与评价研究项目(PXM2021_158307_000007)资助 （PXM2021_158307_000007）
