Isomer-specific trophic transfer of perfluorocarboxylic acids in the marine food web of Liaodong Bay, North China
Abstract
Trophic transfers of perfluorocarboxylic acids (PFCAs) have been well studied in aquatic food webs; however, most studies examined PFCAs as single compounds without differentiating isomers. In this study, an in-port derivatization GC-MS method was used to determine PFCA (perfluorooctanoic acid, PFOA; perfluorononanoic acid, PFNA; perfluorodecanoate acid, PFDA; perfluoroundecanoate acid, PFUnDA; perfluorododecanoate acid, PFDoDA; perfluorotridecanoate acid, PFTriDA, and perfluorotetradecanoate acid, PFTeDA) structural isomers in 11 marine species including benthic invertebrates, fishes, and gulls collected in November 2006 from Liaodong Bay in China. The total concentrations of linear PFCAs were 0.35-1.10, 0.93-2.61, and 2.13-2.69 ng/g ww, and the corresponding percentages of branched PFCAs to linear PFCAs were 6.6-15.5%, 4.2-9.9%, and 4.5-6.0% in invertebrates, fishes, and birds, respectively. Except for linear PFOA, significant positive relationships were found between the concentrations of all the target linear PFCAs and trophic levels, and the trophic magnification factors (TMFs) ranged from 1.90 to 4.88. Positive correlations between the concentrations of branched PFCAs isomers and trophic levels were also observed but were without statistical significance. The relatively high biomagnification of linear isomers of PFCAs would lead to low percentages of branched PFCAs to total PFCAs in organisms at high trophic levels. This study for the first time clarified isomer-specifi…
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Zhang et al. (2015) found trophic magnification factors (TMFs) of these PFCAs ranged from 1.90 to 4.88.
“the trophic magnification factors (TMFs) of these PFCAs ranged from 1.90 to 4.88”
From Per- and polyfluoroalkyl substances (PFAS) in the marine environment: An overview and prospects (2025) · cites this paper as Zhang et al., 2015
Zhang et al. (2015) found the corresponding proportions of branched PFCAs in linear PFCAs were 6.6%-15.5%, 4.2%-9.9%, and 4.5%-6.0% in invertebrates, fishes, and birds, respectively.
“the corresponding proportions of branched PFCAs in linear PFCAs were 6.6%− 15.5%, 4.2%− 9.9%, and 4.5%− 6.0% in invertebrates, fishes, and birds, respectively.”
From Per- and polyfluoroalkyl substances (PFAS) in the marine environment: An overview and prospects (2025) · cites this paper as Zhang et al., 2015
The higher biomagnification of linear PFCAs than that of branched PFCAs indicated that linear PFCAs were more bioaccumulative, leading to high proportions of linear PFCAs among ΣPFCAs in organisms at high trophic levels.
“the higher biomagnification of linear PFCAs than that of branched PFCAs indicated that liner PFCAs were more bioaccumulative, leading to high proportions of liner PFCAs among ΣPFCAs in organisms at high trophic levels.”
From Per- and polyfluoroalkyl substances (PFAS) in the marine environment: An overview and prospects (2025) · cites this paper as Zhang et al., 2015
Zhang et al. (2015) found significant positive relationships between tissue concentrations of most target linear and branched PFCAs and trophic levels.
“They also found significant positive relationships between tissue concentrations of most target linear and branched PFCAs and trophic levels”
From Per- and polyfluoroalkyl substances (PFAS) in the marine environment: An overview and prospects (2025) · cites this paper as Zhang et al., 2015
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- Authors
- Zhang, Z., Peng, H., Wan, Y., & Hu, J.
- Affiliations
- Peking University (CN)
- Corresponding author
- Hu, Jianying
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-01-21
- Volume
- 49
- Issue
- 3
- Pages
- 1453-1461
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W1969807624
- Cited by
- 35
- References
- 41
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 3 · 2023: 8 · 2022: 5 · 2021: 4 · 2020: 2 · 2019: 1 · 2017: 3 · 2016: 1
- FWCI
- 0.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Environmental Science & Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (41171385)
- Special Scientific Research Funds for Environmental Protection (201309027)
- 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
- perfluorocarboxylic acids, biomagnification, trophic magnification factor, marine food webs, perfluorooctanoic acid, PFNA, perfluorodecanoic acid, perfluoroundecanoic acid, benthic invertebrates, marine fish, seabirds, Liaodong Bay
- MeSH terms
- Animals, Birds, Carboxylic Acids, China, Environmental Monitoring, Fishes, Fluorocarbons, Invertebrates, Isomerism, Water Pollutants, Chemical, Food Chain, Bays
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