Distribution, bioaccumulation and trophic transfer of chlorinated polyfluoroalkyl ether sulfonic acids in the marine food web of Bohai, China
Abstract
Chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESAs) caused great concerns recently as novel fluorinated alternatives. However, information on their bioconcentration, bioaccumulation and biomagnification in marine ecosystems is limited. In this study, 152 biological samples including invertebrates, fishes, seabirds and mammals collected from Bohai Sea of China were analyzed to investigate the residual level, spatial distribution, bioaccumulation and biomagnification of Cl-PFESAs. 6:2 Cl-PFESA was found in concentrations ranging from <MDL (method detection limit) to 3.84 ng/g ww and it is the dominant congener when compared with concentrations of 8:2 Cl-PFESA. Compared with other bays and regions, levels of 6:2 Cl-PFESA are relatively high in bivalves and fishes from Liaodong Bay. These levels were also found to tend to increase as compared with those in 2010-2014. Logarithm bioaccumulation factors (BAFs) for 6:2 Cl-PFESA ranged from 2.23 to 4.21, implying the bioaccumulation of this compound. The trophic magnification factor (BMF) for 6:2 Cl-PFESA was determined to be 3.37 in the marine food web, indicating biomagnification potential along the marine food chain.
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Levels of 6:2 Cl-PFESA in biological samples from the Bohai Sea were in the range ND to 3.84 ng/g ww, comparable to those of PFOS.
“Levels of 6:2 Cl-PFESA were in the range of ND to 3.84 ng/g ww, comparable to those of PFOS.”
From Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment (2019) · cites this paper as [78]
In addition to original PFAS, novel PFAS have been detected in biological samples in accordance with the phasing out of original PFAS and a shift toward manufacturing alternatives.
“In addition to original PFAS, novel PFAS have been detected in biological samples in accordance with the phasing out of original PFAS and a shift toward manufacturing alternatives [18,78,80,82,83].”
From Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment (2019) · cites this paper as [78]
6:2 and 8:2 Cl-PFESA and PFOS have bioaccumulated and been biomagnified in the marine ecosystem near the Bohai Sea, China.
“revealing that 6:2 and 8:2 Cl-PFESA and PFOS have bioaccumulated and been biomagnified in the marine ecosystem.”
From Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment (2019) · cites this paper as [78]
In China, there has been an increasing trend in PFAS levels in both human blood and wildlife samples, close to sites where PFAS are currently manufactured.
“In China, there has been an increasing trend in PFAS levels in both human blood and wildlife samples, close to sites where PFAS are currently manufactured [11,78].”
From Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment (2019) · cites this paper as [78]
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Worldwide trends in tracing poly- and perfluoroalkyl substances (PFAS) in the environment
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- Authors
- Chen, H., Han, J., Cheng, J., Sun, R., Wang, X., Han, G., Yang, W., & He, X.
- Affiliations
- Dalian University of Technology (CN)
- State Oceanic Administration (CN)
- Corresponding author
- Han, Jianbo
- Venue
- Environmental Pollution
- Publisher
- Elsevier BV
- Published
- 2018-10
- Volume
- 241
- Pages
- 504-510
- ISSN
- 0269-7491 (ISSN-L)
- OpenAlex
- W2805062936
- Cited by
- 91
- References
- 3
- Citations by year
- 2026: 21 · 2025: 7 · 2024: 17 · 2023: 19 · 2022: 12 · 2021: 7 · 2020: 5 · 2019: 3
- FWCI
- 1.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Pollution (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (41006062, 41276098, 21207014)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
- Keywords
- bioaccumulation, biomagnification, trophic transfer, marine food webs, spatial distribution, marine invertebrates, fish, seabirds, marine mammals, Bohai Sea
- MeSH terms
- Animals, China, Environmental Monitoring, Fishes, Invertebrates, Mammals, Sulfonic Acids, Water Pollutants, Chemical, Food Chain, Bays
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