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Temporal trends of perfluorinated surfactants in Swedish peregrine falcon eggs (Falco peregrinus)
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM). (Analysis of emerging halogenated aliphatic pollutants)
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
Department of Contaminant Research, Swedish Museum of Natural History, SE-10405 Stockholm, Sweden.
Department of Zoology, University of Gothenburg, SE-40530 Gothenburg, Sweden.
Show others and affiliations
(English)Manuscript (preprint) (Other academic)
Keyword [en]
Environmental chemistry, PFOS, PFAS, pollutant, Baltic guillemot, peregrine falcon, Monoporeia affinis, time trend, toxicity
National Category
Environmental Sciences Environmental Sciences
Research subject
Environmental Chemistry; Applied Environmental Science
Identifiers
URN: urn:nbn:se:su:diva-34285OAI: oai:DiVA.org:su-34285DiVA: diva2:284494
Available from: 2010-01-07 Created: 2010-01-07 Last updated: 2010-01-08Bibliographically approved
In thesis
1. Analysis of Perfluoroalkyl Acids in Swedish Biota : Temporal trends, tissue distribution and toxicity
Open this publication in new window or tab >>Analysis of Perfluoroalkyl Acids in Swedish Biota : Temporal trends, tissue distribution and toxicity
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Perfluorinated alkyl acids (PFAS) are ubiquitous environmental contaminants. They are found in high concentrations in top predators worldwide, with perfluorooctane sulfonate (PFOS) as the predominant compound. Due to concerns regarding toxicity and persistence of PFOS, this compound was included in the Stockholm convention of persistent organic pollutants in 2009.

PFAS differ from other persistent organic pollutants in their physicochemical properties and as a result their environmental fate is insufficiently understood. The focus of this thesis was to learn more on the environmental fate of PFAS by analysis of 15 different PFAS in Swedish biota. Analytes included perfluorinated carboxylates (PFCAs; carbon chain lengths C6-C15), perfluorinated sulfonates (PFSAs; C4, C6, C8, C10), and perfluorooctane sulfonamide (PFOSA).

Elevated concentrations of PFAS were found in the marine, terrestrial and limnic Swedish environment, exemplified by Baltic common guillemot (Uria aalge), peregrine falcon (Falco peregrinus), and the amphipod Monoporeia affinis. PFOS was the predominant PFAS in the species. Analysis of archived material showed that PFOS concentration had increased 30-fold in guillemot eggs since 1968. PFOS concentration in peregrine falcon eggs had increased from 1974 to the mid 1980s and then leveled off, while PFCA in the falcon eggs showed an exponential increase until recent years. The relation between PFAS concentrations in egg and in tissue from adult guillemot showed that PFAS had different potentials for transfer to the egg, depending on chain length and functional group.

The toxicological implications of PFAS pollution in the Swedish environment are not known but the high concentrations of PFOS in the Baltic guillemot eggs are of concern. Recent toxicological studies show toxic effects of PFOS in concentrations close to, or below the concentrations reported in this thesis. The margins of safety seem to be higher for the PFCAs, although toxicity data are scarce.

Place, publisher, year, edition, pages
Stockholm: Department of Applied Environmental Science (ITM), Stockholm University, 2010. 43 p.
Keyword
Environmental chemistry, PFOS, PFAS, pollutant, Baltic guillemot, peregrine falcon, Monoporeia affinis, time trend, toxicity
National Category
Environmental Sciences Environmental Sciences
Research subject
Applied Environmental Science
Identifiers
urn:nbn:se:su:diva-34181 (URN)978-91-7155-998-2 (ISBN)
Public defence
2010-02-19, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 12, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Manuscript. Available from: 2010-01-28 Created: 2010-01-07 Last updated: 2010-04-08Bibliographically approved

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