Bioconcentration of the anionic surfactant linear alkylbenzene sulfonate (LAS) in the marine shrimp Palaemonetes varians: A radiotracer study |
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| Authors: | Florent Renaud Michel Warnau François Oberhänsli Jean-Louis Teyssié Ali Temara Claude Rouleau Marc Metian |
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| Institution: | 1. International Atomic Energy Agency – Environment Laboratories (IAEA-EL), 4 Quai Antoine Ier, MC-98000 Principality of Monaco, Monaco;2. Littoral Environnement et Sociétés (LIENSs), UMRi 7266 CNRS-Université La Rochelle, 2 rue Olympe de Gouges, F-17000 La Rochelle, France;3. Procter & Gamble, The Procter & Gamble Company, Temselaan 100, 1853 Strombeek-Bever, Belgium;4. Institut Maurice-Lamontagne, Pêches et Océans Canada, 850, Route de la Mer, C.P. 1000, Mont-Joli G5H 3Z4, Québec, Canada |
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| Abstract: | Uptake and depuration kinetics of dissolved 14C]C12-6-linear alkylbenzene sulfonate (LAS) were determined in the shrimp Palaemonetes varians using environmentally relevant exposure concentration. The shrimp concentrated LAS from seawater with a mean BCF value of 120 L kg−1 after a 7-day exposure. Uptake biokinetics were best described by a saturation model, with an estimated BCFss, of 159 ± 34 L kg−1, reached after 11.5 days. Shrimp weight influenced significantly BCF value with smaller individuals presenting higher affinity to LAS. To the light of a whole body autoradiography, major accumulation of LAS occurred in the cephalothorax circulatory system (gills, heart, hepatopancreas) and ocular peduncle, but not in the flesh, limiting potential transfer to human consumers. LAS depuration rate constant value of the shrimp was 1.18 ± 0.08 d−1 leading to less than 1% of remaining LAS in its tissues after 8 days of depuration. |
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| Keywords: | Detergent Waterborne contaminant Radiotracer Autoradiography Accumulation |
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