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Bioaccumulation, tissue distribution, and maternal transfer of novel PFOS alternatives (6:2 Cl-PFESA and OBS) in wild freshwater fish from Poyang Lake, China.
Chemosphere. 2023 Sep; 336:139253.C

Abstract

As emerging alternatives to perfluorooctane sulfonate (PFOS), 6:2 chlorinated polyfluoroalkyl ether sulfonic acid (6:2 Cl-PFESA) and sodium p-perfluorous nonenox-benzenesulfonate (OBS) were frequently detected in the four freshwater fish species collected from Poyang Lake. Median concentrations of 6:2 Cl-PFESA and OBS in fish tissues were 0.046-6.0 and 0.46-5.1 ng/g wet weight, respectively. The highest concentrations of 6:2 Cl-PFESA was found in fish livers, whereas OBS was found in the pancreas, brain, gonads, and skin. The tissue distribution pattern of 6:2 Cl-PFESA is similar to that of PFOS. The tissue/liver ratios of OBS were higher than those of PFOS, suggesting that OBS has a greater tendency to transfer from the liver to other tissues. The logarithmic bioaccumulation factors (log BAFs) of 6:2 Cl-PFESA in three carnivorous fish species were greater than 3.7, whereas those of OBS were less than 3.7, indicating that 6:2 Cl-PFESA had a strong bioaccumulation potential. Notably, sex- and tissue-specific bioaccumulation of OBS has also been observed in catfish. Most tissues (except the gonads) exhibited higher OBS concentrations in males than in females. However, no differences were found for 6:2 Cl-PFESA and PFOS. Maternal transfer efficiency of OBS was higher than that of 6:2 Cl-PFESA and PFOS in catfish (p < 0.05), indicating that OBS presents a higher risk of exposure to males and offspring through maternal offloading.

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Authors+Show Affiliations

Wang X
College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, China; Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
Liu Y
Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China. Electronic address: liuyu@jxas.ac.cn.
Zhang X
Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
Tu W
School of Land Resources and Environment, Jiangxi Agricultural University, Nanchang, 330045, China.
Wang Q
Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
Liu S
Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
Zhang M
Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China.
Wu Y
College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, China; Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang, 330096, China. Electronic address: wuyongming@jxas.ac.cn.
Mai B
State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.

MeSH

AnimalsFemaleAlkanesulfonic AcidsBioaccumulationCatfishesChinaEthersFluorocarbonsLakesTissue DistributionMale

Pub Type(s)

Journal Article

Language

eng

PubMed ID

37331668

Citation

Wang, Xiandong, et al. "Bioaccumulation, Tissue Distribution, and Maternal Transfer of Novel PFOS Alternatives (6:2 Cl-PFESA and OBS) in Wild Freshwater Fish From Poyang Lake, China." Chemosphere, vol. 336, 2023, p. 139253.
Wang X, Liu Y, Zhang X, et al. Bioaccumulation, tissue distribution, and maternal transfer of novel PFOS alternatives (6:2 Cl-PFESA and OBS) in wild freshwater fish from Poyang Lake, China. Chemosphere. 2023;336:139253.
Wang, X., Liu, Y., Zhang, X., Tu, W., Wang, Q., Liu, S., Zhang, M., Wu, Y., & Mai, B. (2023). Bioaccumulation, tissue distribution, and maternal transfer of novel PFOS alternatives (6:2 Cl-PFESA and OBS) in wild freshwater fish from Poyang Lake, China. Chemosphere, 336, 139253. https://doi.org/10.1016/j.chemosphere.2023.139253
Wang X, et al. Bioaccumulation, Tissue Distribution, and Maternal Transfer of Novel PFOS Alternatives (6:2 Cl-PFESA and OBS) in Wild Freshwater Fish From Poyang Lake, China. Chemosphere. 2023;336:139253. PubMed PMID: 37331668.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioaccumulation, tissue distribution, and maternal transfer of novel PFOS alternatives (6:2 Cl-PFESA and OBS) in wild freshwater fish from Poyang Lake, China. AU - Wang,Xiandong, AU - Liu,Yu, AU - Zhang,Xinghui, AU - Tu,Wenqing, AU - Wang,Qiyu, AU - Liu,Shuai, AU - Zhang,Miao, AU - Wu,Yongming, AU - Mai,Bixian, Y1 - 2023/06/16/ PY - 2023/05/11/received PY - 2023/06/14/revised PY - 2023/06/15/accepted PY - 2023/7/5/medline PY - 2023/6/19/pubmed PY - 2023/6/18/entrez KW - 6:2 Cl-PFESA KW - Bioaccumulation factor KW - Maternal transfer efficiency KW - OBS KW - Tissue distribution SP - 139253 EP - 139253 JF - Chemosphere JO - Chemosphere VL - 336 N2 - As emerging alternatives to perfluorooctane sulfonate (PFOS), 6:2 chlorinated polyfluoroalkyl ether sulfonic acid (6:2 Cl-PFESA) and sodium p-perfluorous nonenox-benzenesulfonate (OBS) were frequently detected in the four freshwater fish species collected from Poyang Lake. Median concentrations of 6:2 Cl-PFESA and OBS in fish tissues were 0.046-6.0 and 0.46-5.1 ng/g wet weight, respectively. The highest concentrations of 6:2 Cl-PFESA was found in fish livers, whereas OBS was found in the pancreas, brain, gonads, and skin. The tissue distribution pattern of 6:2 Cl-PFESA is similar to that of PFOS. The tissue/liver ratios of OBS were higher than those of PFOS, suggesting that OBS has a greater tendency to transfer from the liver to other tissues. The logarithmic bioaccumulation factors (log BAFs) of 6:2 Cl-PFESA in three carnivorous fish species were greater than 3.7, whereas those of OBS were less than 3.7, indicating that 6:2 Cl-PFESA had a strong bioaccumulation potential. Notably, sex- and tissue-specific bioaccumulation of OBS has also been observed in catfish. Most tissues (except the gonads) exhibited higher OBS concentrations in males than in females. However, no differences were found for 6:2 Cl-PFESA and PFOS. Maternal transfer efficiency of OBS was higher than that of 6:2 Cl-PFESA and PFOS in catfish (p < 0.05), indicating that OBS presents a higher risk of exposure to males and offspring through maternal offloading. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/37331668/Bioaccumulation_tissue_distribution_and_maternal_transfer_of_novel_PFOS_alternatives__6:2_Cl_PFESA_and_OBS__in_wild_freshwater_fish_from_Poyang_Lake_China_ DB - PRIME DP - Unbound Medicine ER -