典型文献
Levels,distributions,and sources of legacy and novel per-and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin,China
文献摘要：
Soil is a major sink for per-and perfluoroalkyl substances (PFAS),wherein PFAS may be transferred through the food chain to predators at upper trophic levels,which poses a threat to human health.Herein,the concentrations and distributions of legacy and novel PFAS in topsoil samples from different functional areas in Tianjin were comprehensively investi-gated.Seventeen PFAS congeners were identified,with concentrations ranging from 0.21 ng/g to 5.35 ng/g,with a mean concentration of 1.25 ng/g.The main PFAS in the topsoil was perfluorooctanoic acid (PFOA).6∶2 chlorinated polyfluorinated ether sulfonate (6∶2 Cl-PFESA;＜MDL-1.95 ng/g,mean 0.11 ng/g),as an emerging substitute for perfluorooctane sul-fonate (PFOS),was also detected in the topsoil.It showed slightly higher concentrations than PFOS (＜MDL-1.62 ng/g,mean 0.10 ng/g),indicating it has gradually replaced legacy PFOS in this area.Based on the positive-definite matrix factor (PMF) receptor model,the major PFAS sources was dominated by textile treatment,metal electroplating plants,and some poten-tial precursors of PFAS with longer chains (＞C8) were the major sources (43.4％),followed by food packaging as well as coating materials (25.5％).In addition,Spearman correlation analysis and the structural equation model showed that population density significantly impacted the PFAS distribution in the topsoil of Tianjin.
文献关键词：
中图分类号：
作者姓名：
Donghui Ma;Huifang Zhong;Jitao Lv;Yawei Wang;Guibin Jiang
作者机构：
State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China;Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances,Institute of Environment and Health,Jianghan University,Wuhan 430056,China
文献出处：
引用格式：
[1]Donghui Ma;Huifang Zhong;Jitao Lv;Yawei Wang;Guibin Jiang-.Levels,distributions,and sources of legacy and novel per-and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin,China)[J].环境科学学报（英文版）,2022(02):71-81
A类：
perfluoroalkyl,polyfluorinated,PFESA,fonate
B类：
Levels,distributions,sources,legacy,novel,substances,PFAS,topsoil,Tianjin,China,Soil,major,sink,wherein,may,be,transferred,through,food,predators,upper,trophic,levels,which,poses,threat,human,health,Herein,concentrations,samples,from,different,functional,areas,were,comprehensively,investi,gated,Seventeen,congeners,identified,ranging,mean,main,was,perfluorooctanoic,acid,PFOA,chlorinated,ether,sulfonate,Cl,MDL,emerging,substitute,perfluorooctane,PFOS,also,detected,It,showed,slightly,higher,than,indicating,has,gradually,replaced,this,Based,positive,definite,matrix,PMF,receptor,model,dominated,by,textile,treatment,metal,electroplating,plants,some,poten,tial,precursors,longer,chains,C8,followed,packaging,well,coating,materials,In,addition,correlation,analysis,structural,equation,that,population,density,significantly,impacted
AB值：
0.548008
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