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Legacy and Emerging Per- and Polyfluoroalkyl Substances in a Subtropical Marine Food Web: Suspect Screening, Isomer Profile, and Identification of Analytical Interference
State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China; Örebro University, Örebro, Sweden. (Man-Technology-Environment Research Centre (MTM))
State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China.
State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China.
State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China.
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2023 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 57, no 22, p. 8355-8364Article in journal (Refereed) Published
Abstract [en]

The ban/elimination of legacy per- and polyfluoroalkyl substances (PFASs) has led to a dramatic increase in the production and use of various emerging PFASs over the past decade. However, trophodynamics of many emerging PFASs in aquatic food webs remain poorly understood. In this study, samples of seawaters and marine organisms including 15 fish species, 21 crustacean species, and two cetacean species were collected from the northern South China Sea (SCS) to investigate the trophic biomagnification potential of legacy and emerging PFASs. Bis(trifluoromethylsulfonyl)imide was found in seawater via suspect screening (concentration up to 1.50 ng/L) but not in the biota, indicating its negligible bioaccumulation potential. A chlorinated perfluorooctane sulfonate (PFOS) analytical interfering compound was identified with a predicted formula of C14H23O5SCl6- (most abundant at m/z = 514.9373). Significant trophic magnification was observed for 22 PFASs, and the trophic magnification factors of cis- and trans-perfluoroethylcyclohexane sulfonate isomers (1.92 and 2.25, respectively) were reported for the first time. Perfluorohexanoic acid was trophic-magnified, possibly attributed to the PFAS precursor degradation. The hazard index of PFOS was close to 1, implying a potential human health risk via dietary exposure to PFASs in seafood on the premise of continuous PFAS discharge to the SCS.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023. Vol. 57, no 22, p. 8355-8364
Keywords [en]
Cl-PFESA, Cl-PFOS, H-PFESA, NTf2, PFECHS, relative potency factor, trophic magnification factor
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:oru:diva-106025DOI: 10.1021/acs.est.3c00374ISI: 001004734100001PubMedID: 37220884Scopus ID: 2-s2.0-85162237553OAI: oai:DiVA.org:oru-106025DiVA, id: diva2:1758914
Note

Funding agencies:

National Key Research and Development Program of China 2022YFC3204800

Guangdong Basic and Applied Basic Research Foundation 2021A1515012048

Theme-Based Research Scheme of Research Grants Council of the Hong Kong SAR Government T21-602/16-R

Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) 311020004

Innovation and Technology Commission (ITC) of the Hong Kong SAR Government 9448002

State Key Laboratory of Marine Pollution

Available from: 2023-05-24 Created: 2023-05-24 Last updated: 2023-07-26Bibliographically approved

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Yeung, Leo W. Y.

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