Multicompartment occurrence and partitioning of alternative and legacy per- and polyfluoroalkyl substances in an impacted river in China
Gao, L; Liu, J; Bao, K; Chen, N; Meng, B
HERO ID
6416399
Reference Type
Journal Article
Year
2020
Language
English
PMID
| HERO ID | 6416399 |
|---|---|
| In Press | No |
| Year | 2020 |
| Title | Multicompartment occurrence and partitioning of alternative and legacy per- and polyfluoroalkyl substances in an impacted river in China |
| Authors | Gao, L; Liu, J; Bao, K; Chen, N; Meng, B |
| Journal | Science of the Total Environment |
| Volume | 729 |
| Page Numbers | 138753 |
| Abstract | Per- and polyfluoroalkyl substances (PFASs) are emerging global environmental contaminants. Exploring the occurrence and environmental behavior of PFASs in the aquatic environment is a key step in solving global fluorine chemical pollution problems. In this study, surface water, pore water, and sediment were collected from the main tributary and the middle and lower reaches of the Daling River, adjacent to the Fuxin fluorochemical manufacturing facilities in Liaoning Province in China, to elucidate the occurrence and partition behavior of PFASs. The total concentrations of PFASs ranged from 48.4 to 4578 ng/L in the overlying water, from 173 to 9952 ng/L in the pore water, and from 2.16 to 40.3 ng/g dw in the sediment fraction. Generally, perfluorobutanoic acid (PFBA) and perfluorobutane sulfonate (PFBS) were the predominant congeners in the samples, with the mean relative content fractions being almost consistently >40% in the dissolved phase and >25% in the sediment. Hexafluoropropylene oxide dimer acid (HFPO-DA) and chlorinated polyfluorinated ether sulfonic acid (6:2 Cl-PFESA) were detected, albeit at low levels. In addition, the detection frequency and the contribution of legacy long-chain PFASs in sediment were higher than those in the overlying water and pore water. Except for perfluorohexane sulfonate (PFHxS), the concentrations of the alternative PFASs in the pore water were higher than in the overlying water. The organic carbon fraction was a more important controlling factor for PFAS sediment levels than cations content. As with legacy long-chain PFASs, HFPO-DA and 6:2 Cl-PFESA tended to partition into the solid phase, whereas short-chain PFASs were readily distributed in the aqueous phase. Such research results will be helpful in modeling the transport and fate of PFASs released by point sources into coastal waters through rivers and in developing effective risk assessment and management strategies for the control of PFAS pollution. |
| Doi | 10.1016/j.scitotenv.2020.138753 |
| Pmid | 32375068 |
| Wosid | WOS:000537444000018 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Scopus URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084069292&doi=10.1016%2fj.scitotenv.2020.138753&partnerID=40&md5=4a5a13dff5b134053378e30206a23b81 |
| Is Public | Yes |
| Language Text | English |
| Keyword | Perfluoroalkyl substances (PFASs); Alternatives; Occurrence; Partitioning; Pore water |
| Relationship(s) |
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