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Concentrations of 45 Per- and Polyfluoroalkyl Substances in North American River Otters (Lontra canadensis) from West Virginia, USA
Wadsworth Center, New York State Department of Health and Department of Environmental Health Sciences, State University of New York at Albany, Empire State Plaza, Albany, New York 12237, United States.ORCID iD: 0000-0002-9054-1235
Swedish Museum of Natural History, Department of Environmental Monitoring and Research. Department of Environmental Monitoring and Research, Swedish Museum of Natural History, Stockholm SE-10405, Sweden.ORCID iD: 0000-0001-7780-9535
Department of Biology and Natural Resources, Frostburg State University, Frostburg, Maryland 21532, United States.
Wadsworth Center, New York State Department of Health and Department of Environmental Health Sciences, State University of New York at Albany, Empire State Plaza, Albany, New York 12237, United States.
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2024 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 58, no 4, p. 2089-2101Article in journal (Refereed) Published
Abstract [en]

North American river otters (Lontra canadensis) aretop predators in riverine ecosystems and are vulnerable to per- andpolyfluoroalkyl substance (PFAS) exposure. Little is known aboutthe magnitude of exposure and tissue distribution of PFAS in riverotters. We measured 45 PFAS in various tissues of 42 river otterscollected from several watersheds in the state of West Virginia,USA. The median concentrations of ΣAll (sum concentration of45 PFAS) varied among tissues in the following decreasing order:liver (931 ng/g wet weight) > bile > pancreas > lung > kidney >blood > brain > muscle. Perfluoroalkylsulfonates (PFSAs) were thepredominant compounds accounting for 58−75% of the totalconcentrations, followed by perfluoroalkyl carboxylates (PFCAs;21−35%). 8:2 fluorotelomer sulfonate (8:2 FTS), 10:2 FTS, and 6:2 chlorinated polyfluoroalkyl ether sulfonate were frequentlyfound in the liver (50−90%) and bile (96−100%), whereas hexafluoropropylene oxide dimer acid (HFPO-DA) was rarely found.The hepatic concentrations of ΣAll in river otters collected downstream of a fluoropolymer production facility located along theOhio River were 2-fold higher than those in other watersheds. The median whole body burden of ΣAll was calculated to be 1580μg. PFOS and perfluorooctanoic acid (PFOA) concentrations in whole blood of some river otters exceeded the human toxicityreference values, which warrant further studies.

Place, publisher, year, edition, pages
2024. Vol. 58, no 4, p. 2089-2101
Keywords [en]
per- and polyfluoroalkyl substances (PFAS), river otter, time trend, tissue distribution, body burden
National Category
Zoology Medical and Health Sciences Ecology Earth and Related Environmental Sciences Environmental Sciences Organic Chemistry
Research subject
Man and the environment
Identifiers
URN: urn:nbn:se:nrm:diva-5546DOI: 10.1021/acs.est.3c09467OAI: oai:DiVA.org:nrm-5546DiVA, id: diva2:1841850
Available from: 2024-03-01 Created: 2024-03-01 Last updated: 2024-03-01Bibliographically approved

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Li, Zhong-MinRoos, Anna MariaKannan, Kurunthachalam
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