Polybrominated Diphenyl Ethers and Their Hydroxylated Analogues in Ringed Seals (Phoca hispida) from Svalbard and the Baltic Sea

Citations Over TimeTop 10% of 2009 papers

Abstract

The present study investigated the concentrations and patterns of PBDEs and hydroxylated (OH) PBDE analogues in two ringed seal populations: less contaminated Svalbard and more contaminated Baltic Sea. Mean concentration of hepatic Σ-PBDE, which was dominated by BDE47, was six times higher in the ringed seals from the Baltic Sea compared to the seals from Svalbard. BDE47/Σ-PBDE was higher in the seals from Svalbard compared to that for Baltic seals, while the trend was opposite for BDE153 and 154. The geographical difference in contaminant pattern of PBDEs in ringed seals could be explained by biotransformation via oxidative metabolism and/or by dietary differences. OH-PBDEs were detectable in the majority of plasma samples from both locations, and dominated by bioaccumulation of naturally occurring congeners. Low levels of 3-OH-BDE47 and 4′-OH-BDE49 in the Baltic ringed seals suggested minor oxidative biotransformation of BDE47. In the Baltic seals, BDE153/Σ-PBDEs and BDE154/Σ-PBDEs increased and BDE28/Σ-PBDE decreased with increasing Σ-POP concentration, which suggests BDE153 and 154 are more persistent than BDE28. Contrasting diets of the ringed seals in these two locations may influence the PBDE congener pattern due to selective long-range transport and direct effluent emissions to Svalbard and the Baltic, respectively.

Related Papers

• → Dietary exposure of juvenile common sole ( Solea solea L.) to polybrominated diphenyl ethers (PBDEs): Part 1. Bioaccumulation and elimination kinetics of individual congeners and their debrominated metabolites(2010)61 cited
• → Bioaccumulation and biotransformation of polybrominated diphenyl ethers in the marine bivalve (Scapharca subcrenata): Influence of titanium dioxide nanoparticles(2014)31 cited
• → Bioaccumulation of polybrominated diphenyl ethers in harbor seals from the northwest Atlantic(2008)52 cited
• → Bioaccumulation, maternal transfer and elimination of polybrominated diphenyl ethers in wild frogs(2011)33 cited
• → Accumulation of Polybrominated Diphenyl Ethers (PBDEs) in Mudsnails (Cipangopaludina cahayensis) Did Not Increase with Age(2013)2 cited