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Temporal trends of perfluoroalkyl substances (PFAS) in eggs of coastal and offshore birds: Increasing PFAS levels associated with offshore bird species breeding on the Pacific coast of Canada and wintering near Asia.
Miller, Aroha; Elliott, John E; Elliott, Kyle H; Lee, Sandi; Cyr, Francois.
Afiliación
  • Miller A; Department of Applied Biology, University of British Columbia, Vancouver, British Columbia, Canada.
  • Elliott JE; Department of Applied Biology, University of British Columbia, Vancouver, British Columbia, Canada.
  • Elliott KH; Science and Technology Branch, Pacific Wildlife Research Centre, Environment Canada, Delta, British Columbia, Canada.
  • Lee S; Department of Natural Resource Sciences, McGill University, Sainte-Anne-de-Bellevue, Quebec, Canada.
  • Cyr F; Science and Technology Branch, Pacific Wildlife Research Centre, Environment Canada, Delta, British Columbia, Canada.
Environ Toxicol Chem ; 34(8): 1799-808, 2015 Aug.
Article en En | MEDLINE | ID: mdl-25989421
Perfluoroalkyl substances (PFAS) such as perfluoroalkyl carboxylates (PFCAs) and perfluoroalkyl sulfonates (PFSAs) have become virtually ubiquitous throughout the environment, and, based on laboratory studies, have known toxicological consequences. Various national and international voluntary phase-outs and restrictions on these compounds have been implemented over the last 10 to 15 years. In the present study, we examine trends (1990/1991-2010/2011) in aquatic birds (ancient murrelet, Synthliboramphus antiquus [2009 only]; Leach's storm-petrels, Oceanodroma leucorhoa; rhinoceros auklets, Cerorhinca monocerata; double-crested cormorants, Phalacrocorax auritus; and great blue herons, Ardea herodias). The PFCA, PFSA, and stable isotope (δ(15) N and δ(13) C) data collected from these species from the Pacific coast of Canada, ranging over 20 to 30 years, were used to investigate temporal changes in PFAS coupled to dietary changes. Perfluorooctane sulfonic acid (PFOS), the dominant PFSA compound in all 4 species, increased and subsequently decreased in auklet and cormorant eggs in line with the manufacturing phase-out of PFOS and perfluorooctanoic acid (PFOA), but concentrations continuously increased in petrel eggs and remained largely unchanged in heron eggs. Dominant PFCA compounds varied between the offshore and coastal species, with increases seen in the offshore species and little or variable changes seen in the coastal species. Little temporal change was seen in stable isotope values, indicating that diet alone is not driving observed PFAS concentrations.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Óvulo / Aves / Ácidos Alcanesulfónicos / Fluorocarburos Tipo de estudio: Risk_factors_studies Límite: Animals País/Región como asunto: America do norte / Asia Idioma: En Revista: Environ Toxicol Chem Año: 2015 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Óvulo / Aves / Ácidos Alcanesulfónicos / Fluorocarburos Tipo de estudio: Risk_factors_studies Límite: Animals País/Región como asunto: America do norte / Asia Idioma: En Revista: Environ Toxicol Chem Año: 2015 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos