Migration mechanism and risk assessment of perand polyfluoroalkyl substances in the Ya'Er Lake oxidation pond area,China

作     者：Chang Li Huifang Zhong Jing Wu Lingyi Meng Yingjun Wang Chunyang Liao Yawei Wang Yujian He Chang Li;Huifang Zhong;Jing Wu;Lingyi Meng;Yingjun Wang;Chunyang Liao;Yawei Wang;Yujian He

作者机构：University of Chinese Academy of SciencesBeijing 100049China Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Institute of Biomedical and Health EngineeringShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China China National Environmental Monitoring CentreBeijing 100012China Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic SubstancesInstitute of Environment and HealthJianghan UniversityWuhan 430056China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2024年第136卷第2期

页      面：301-312页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 083001[工学-环境科学] 07[理学] 08[工学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China (Nos.22136006 and 51972302) the K.C.Wong Education Foundation of China (No.GJTD-2020-03) 

主　　题：Perfluoroalkyl substances Distribution Migration mechanism Risk assessment 

摘      要：The migration mechanisms,sources,and environmental risks of 29 legacy and emerging perfluorinated and polyfluoroalkyl species present in an oxidation pond(Ya Er Lake)were investigated for treating sewage based on the analysis of their occurrence and *** concentration of per-and polyfluoroalkyl substances(PFAS)in pond area was between0.30 and 63.2 ng/g dw(dry weight),with the overall average concentration of 8.00 ng/g ***,the PFAS concentrations in the surface sediments near the sewage outlet in Pond-1(50.2 ng/g dw)and Pond-5(average 15.1 ng/g dw)were 1–2 orders of magnitude higher than those in other *** general,the legacy PFAS,i.e.,perfluorooctane sulfonic acid was considered to be the major pollutant in the polluted area,on average,accounting for 73.0%of the total concentration of PFAS *** evaluating the regional distribution of different PFAS homologs,the short-chain PFAS pollutants with lower K_(ow)were found to migrate farther in both horizontal and vertical *** sewage outlets in Pond-1 and Pond-5are the main pollution sources in polluted area and the emerging PFAS pollutants in Pond-5have replaced the legacy PFAS pollutants as the main *** on positive matrix factorization analysis,three main industrial sources of PFAS pollutants in the study area were identified:protective coating,fire-fighting,and food packaging ***,the environmental risk assessment results showed that most study areas exhibited medium environmental risk(0.01≤Risk quotient(RQ)1),indicating that the ecological environment risks in this area need further attention.