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Levels, distributions, and sources of legacy and novel per- and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin, China
Ma, Donghui; Zhong, Huifang; Lv, Jitao; Wang, Yawei; Jiang, Guibin
2022
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
Volume112Issue:0Pages:71-78
AbstractSoil 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 investigated. 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 sulfonate (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 potential 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. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Department环境化学与生态毒理学国家重点实验室
KeywordPFAS Topsoil 6:2 Cl-PFESA Source Distribution
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46951
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Jianghan Univ, Inst Environm & Hlth, Hubei Key Lab Environm & Hlth Effects Persistent, Wuhan 430056, Peoples R China
Recommended Citation
GB/T 7714
Ma, Donghui,Zhong, Huifang,Lv, Jitao,et al. Levels, distributions, and sources of legacy and novel per- and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin, China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,112(0):71-78.
APA Ma, Donghui,Zhong, Huifang,Lv, Jitao,Wang, Yawei,&Jiang, Guibin.(2022).Levels, distributions, and sources of legacy and novel per- and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin, China.JOURNAL OF ENVIRONMENTAL SCIENCES,112(0),71-78.
MLA Ma, Donghui,et al."Levels, distributions, and sources of legacy and novel per- and perfluoroalkyl substances (PFAS) in the topsoil of Tianjin, China".JOURNAL OF ENVIRONMENTAL SCIENCES 112.0(2022):71-78.
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