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Bioaccumulation of Polybrominated Diphenyl Ethers by the Freshwater Benthic Amphipod Gammarus pulex

Abstract : This study reports on the relationship between polybrominated diphenyl ether (PBDE) levels in water, sediment, and the benthic macroinvertebrate Gammarus pulex, which plays a major ecological role in freshwater ecosystems. Samples were taken in a periurban watershed (near Paris, France), and PBDEs were systematically detected in sediment (a parts per thousand currency sign727 ng g(-1) OC) and G. pulex (a parts per thousand currency sign264 ng g(-1) lipids). PBDEs were also occasionally detected in the water column at low levels (a PBDEs < 1.5 ng L-1). The log values of bioaccumulation factors were in the range 7.8 +/- A 0.1-8.3 +/- A 0.4 L kg(-1) for tetra- and penta-BDEs, which were the only ones quantified in the dissolved phase of river water. Meanwhile, levels of individual tri- to hepta-PBDE congeners in G. pulex generally positively correlated with sediment levels, suggesting an equilibrium situation. Biota-to-sediment accumulation factors (BSAFs) of tri-hepta BDEs were congener specific and were in the range 0.5 +/- A 0.3-2.6 +/- A 1.2. For several PBDEs, BSAF values deviated from the expected range, likely because of in vivo metabolism.
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https://hal.archives-ouvertes.fr/hal-01195894
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Submitted on : Tuesday, September 8, 2015 - 4:09:40 PM
Last modification on : Tuesday, December 15, 2020 - 4:02:18 AM

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Khawla Tlili, Pierre Labadie, Catherine Bourges, Annie Desportes, Marc Chevreuil. Bioaccumulation of Polybrominated Diphenyl Ethers by the Freshwater Benthic Amphipod Gammarus pulex. Archives of Environmental Contamination and Toxicology, Springer Verlag, 2012, 63 (1), pp.69-76. ⟨10.1007/s00244-012-9751-x⟩. ⟨hal-01195894⟩

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