第30卷第4期2023年7月地学前缘(中国地质大学(北京);北京大学)EarthScienceFrontiers(ChinaUniversityofGeosciences(Beijing);PekingUniversity)Vol.30No.4Jul.2023https://www.earthsciencefrontiers.net.cn地学前缘,2023,30(4)收稿日期:20220712;修回日期:20230207基金项目:国家自然科学基金面上项目(21876014)作者简介:宁文婧(1997—),女,硕士研究生,地球化学专业。E-mail:ningwenjing0616@outlook.com*通信作者简介:严丽萍(1979—),女,博士,副教授,主要从事环境保护研究工作。E-mail:yanliping@yangtzeu.edu.cnDOI:10.13745/j.esf.sf.2023.2.46清远市清城区土壤中重金属的空间分布、来源解析和健康评价:基于PCA和PMF模型的对比宁文婧1,谢先明2,严丽萍1,*1.长江大学油气地球化学与环境湖北省重点实验,湖北武汉4301002.广东省水文地质大队,广东广州510510NINGWenjing1,XIEXianming2,YANLiping1,*1.HubeiKeyLaboratoryofPetroleumGeochemistryandEnvironment,YangtzeUniversity,Wuhan430100,China2.GuangdongHydrogeologyBattalion,Guangzhou510510,ChinaNINGWenjing,XIEXianming,YANLiping.Spatialdistribution,sourcesandhealthrisksofheavymetalsinsoilinQingchengDistrict,QingyuanCity:ComparisonofPCAandPMFmodelresults.EarthScienceFrontiers,2023,30(4):470-484Abstract:Inthisstudywecollected122soilsamplesfromatypical,rapidlytransformingindustrialurbanareainsoutheasternChinatoevaluatepollutioncharacteristicsof9heavymetals(As,Co,Cr,Cu,Hg,Ni,Pb,Ti,andZn)insoilusingenrichmentfactor(EF),geologicalaccumulationindex(Igeo),Spearmancorrelationanalysis,potentialecologicalriskcomprehensiveindex(RI),andhumanhealthriskmodel(HHR);combinedwithprincipalcomponentanalysis(PCA),positivematrixfactorization(PMF)modelandgeostatisticalanalysis,thesourceofheavymetalswasinvestigated.TheresultsshowedthatAs,Cu,Hg,Pb,andZnwereobviouslyenrichedinsoil,butthestudyareaasawholeiscleanfromheavymetalpollution.HierarchicalclusteringandgroupingresultsofheavymetalsbyPCAandPMFmodelsidentified2and3sourceareasrespectively,whichhelpedtoimprovetheaccuracyofsourceanalysis.Accordingtoecologicalriskassessmentthestudyareaasawholeisatslightecologicalrisk,andHgposesthehighestecologicalriskamongallele...
