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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Accumulation of perfluorooctane sulfonate (PFOS) in the food chain of the Western Scheldt estuary: comparing field measurements with kinetic modeling De Vos, M.G.; Huijbregts, M.A.J.; Van den Heuvel-Greve, M.; Vethaak, A.D.; Van de Vijver, K.I.; Leonards, P.E.G.; Van Leeuwen, S.P.J.; de Voogt, P.; Hendriks, A.J. (2008). Accumulation of perfluorooctane sulfonate (PFOS) in the food chain of the Western Scheldt estuary: comparing field measurements with kinetic modeling. Chemosphere 70(10): 1766-1773. http://dx.doi.org/10.1016/j.chemosphere.2007.08.038 In: Chemosphere. Elsevier: Oxford. ISSN 0045-6535; e-ISSN 1879-1298, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 153709 [ download pdf ]

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Trefwoorden

Agents > Surfactants Biological phenomena > Accumulation > Bioaccumulation Elimination Physics > Mechanics > Kinetics Uptake Marien/Kust; Brak water

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Auteurs		Top
De Vos, M.G., meer Huijbregts, M.A.J., meer Van den Heuvel-Greve, M., meer	Vethaak, A.D., meer Van de Vijver, K.I., meer Leonards, P.E.G., meer	Van Leeuwen, S.P.J. de Voogt, P., meer Hendriks, A.J., meer

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Abstract

The environmentally persistent perfluorooctane sulfonate (PFOS) is a perfluoroalkylated acid (PFA), which has been found to accumulate and biomagnify through food webs all over the world. In the present investigation, the accumulation kinetics of PFOS was explored using the bioaccumulation model OMEGA. As accumulation behavior of PFOS may show similarities to fatty acids as well as to neutral organic compounds, different modeling approaches were used. Accumulation kinetics of PFOS was modeled similar to (1) moderately and (2) highly hydrophobic compounds, (3) metals and (4) as a combination of hydrophobic compounds and metals. Modeled elimination and uptake rate constants were compared to empirical rate constants from literature. Subsequently, model predictions were compared to field-based biota-suspended solids accumulation ratios (BSAF) in the estuarine food chain of the Western Scheldt, The Netherlands. Results show that uptake of PFOS is comparable to moderately hydrophobic compounds and elimination is best described by elimination kinetics of metals. These observations indicate that the accumulation behavior of PFOS is comparable to that of short and medium chained fatty acids.

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