Joerss, Hanna1,2; Schramm, Thekla-Regine1; Sun, Linting3,4; Guo, Chao3,4; Tang, Jianhui3,5
; Ebinghaus, Ralf1发表期刊ENVIRONMENTAL POLLUTION
ISSN0269-7491
2020-12-01
卷号267页码:9
关键词Emerging contaminantsPFASsSurface waterLC-MS/MSIsomer profilingTotal oxidizable precursor assay
DOI10.1016/j.envpol.2020.115567
通讯作者Tang, Jianhui(jhtang@yic.ac.cn)
英文摘要This study aimed at comparing source-specific fingerprints of per- and polyfluoroalkyl substances (PFASs) in river water from China and Germany, selected as countries with different histories of PFAS production. Samples were collected from up- and downstream of seven suspected point sources in autumn 2018. Amongst the 29 analyzed legacy and emerging PFASs, 24 were detected, with a sum ranging from 2.7 ng/L (Alz River) to 420,000 ng/L (Xiaoqing River). While mass flow estimates for the Xiaoqing River and Yangtze River (mean: 20 and 43 t/y, respectively) indicated ongoing high emissions of the legacy compound PFOA in China, its ether-based replacements HFPO-DA and DONA showed the highest contribution downstream of a German fluoropolymer manufacturing site (50% and 40% of Sigma PFASs measured, respectively). In river water impacted by manufacturing sites for pharmaceutical and pesticide intermediates, the short-chain compound PFBS was the most prevalent substance in both countries. The German Ruhr River, receiving discharges from the electroplating industry, was characterized by the PFOS replacement 6:2 FTSA. Isomer profiling revealed a higher proportion of branched isomers in the Chinese Xi River and Xiaoqing River than in other rivers. This points to different synthesis routes and underlines the importance of differentiating between linear and branched isomers in risks assessments. Upon oxidative conversion in the total oxidizable precursor (TOP) assay, the increase of the short-chain compound PFBA was higher in German samples than in Chinese samples (88 +/- 30% versus 12 +/- 14%), suggesting the presence of a higher proportion of unknown precursors to PFBA in the German environment. Amongst the ether-based replacements, DONA and 6:2 Cl-PFESA were fully or partially degraded to non-targeted oxidation products, whereas HFPO- DA showed no degradation. This indicates that the inclusion of ether-based PFASs and their oxidation products in the TOP assay can help in capturing a larger amount of the unknown PFAS fraction. (c) 2020 Elsevier Ltd. All rights reserved.
资助机构SOA (State Oceanic Administration of China)-BMBF (German Federal Ministry of Education and Research) joint project MEGAPOL; National Natural Science Foundation of China; Key Deployment Project of the Centre for Ocean Mega-Science, Chinese Academy of Sciences
收录类别SCI
语种英语
关键词[WOS]PERFLUOROALKYL ACIDS PFAAS; FLUORINATED ALTERNATIVES; ISOMER PROFILES; PFOS; CHALLENGES; EMISSIONS; SURFACE; ASSAY; FATE
研究领域[WOS]Environmental Sciences & Ecology
WOS记录号WOS:000593967000023
引用统计被引频次：7[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/27538
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者Tang, Jianhui作者单位1.Helmholtz Zentrum Geesthacht, Inst Coastal Res, D-21502 Geesthacht, Germany
2.Univ Hamburg, Inst Inorgan & Appl Chem, D-20146 Hamburg, Germany
3.Chinese Acad Sci, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714Joerss, Hanna,Schramm, Thekla-Regine,Sun, Linting,et al. Per- and polyfluoroalkyl substances in Chinese and German river water - Point source- and country-specific fingerprints including unknown precursors[J]. ENVIRONMENTAL POLLUTION,2020,267:9.
APAJoerss, Hanna,Schramm, Thekla-Regine,Sun, Linting,Guo, Chao,Tang, Jianhui,&Ebinghaus, Ralf.(2020).Per- and polyfluoroalkyl substances in Chinese and German river water - Point source- and country-specific fingerprints including unknown precursors.ENVIRONMENTAL POLLUTION,267,9.
MLAJoerss, Hanna,et al."Per- and polyfluoroalkyl substances in Chinese and German river water - Point source- and country-specific fingerprints including unknown precursors".ENVIRONMENTAL POLLUTION 267(2020):9.
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