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HERO ID
4827063
Reference Type
Journal Article
Title
Emissions, Transport, and Fate of Emerging Per- and Polyfluoroalkyl Substances from One of the Major Fluoropolymer Manufacturing Facilities in China
Author(s)
Song, X; Vestergren, R; Shi, Y; Huang, J; Cai, Y
Year
2018
Is Peer Reviewed?
1
Journal
Environmental Science & Technology
ISSN:
0013-936X
EISSN:
1520-5851
Volume
52
Issue
17
Page Numbers
9694-9703
Language
English
PMID
30118215
DOI
10.1021/acs.est.7b06657
Web of Science Id
WOS:000444061100016
Abstract
Fluoropolymer manufacturing is a major historical source of perfluorooctanoic acid (PFOA) on a global scale, but little is known about the emissions, transport, and fate of emerging per- and polyfluoroalkyl substances (PFASs). Here, we performed a comprehensive spatial trend and interyear comparison of surface water and sediment samples from the Xiaoqing River, which receives water discharge from one of the major fluoropolymer manufacturing facilities in China. A suspect screening identified 42 chemical formulas, including the tetramer acid of hexafluoropropylene oxide (HFPO-TeA) and numerous tentatively detected isomers of C9-C14 per- or polyfluoroalkyl ether carboxylic acids (PFECAs). As revealed by the spatial trends and peak area-based sediment-water distribution coefficients, emerging PFASs with 3-9 perfluorinated carbons were transported unimpededly with the bulk water flow having no measurable degradation. Emerging PFASs with >9 perfluorinated carbons displayed more rapidly decreasing spatial trends than shorter-chain homologues in surface water due to increasing sedimentation rates. The presence of HFPO oligomers, monoether PFECAs, monohydrogen-substituted perfluoroalkyl carboxylic acids (PFCAs) and monochlorine-substituted PFCAs could partly be explained by the active use of polymerization aids or the impurities therein. However, further research is encouraged to better characterize the emissions of low-molecular-weight PFASs from fluoropolymers throughout their life-cycle.
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
PFAS 150
Literature Search August 2019
PubMed
Not prioritized for screening
Ammonium perfluorooctanoate
Perfluorooctanoic acid
•
PFAS Universe
Data Source
Web of Science
Pubmed
Hexafluoropropene
Perfluorooctanoate
Trifluoro(trifluoromethyl)oxirane
Perfluorooctanoic acid
OW - HHRAB
•
GenX Chemicals (CASRN 13252-13-6 and CASRN 62037-80-3)
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search Update (2013-2019)
PubMed
WOS
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