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PBDE and PCB Accumulation in Benthos Near Marine Wastewater Outfalls: The Role of Sediment Organic Carbon

PBDE and PCB Accumulation in Benthos Near Marine Wastewater Outfalls: The Role of Sediment Organic Carbon

Pamela M Dinn, Sophia C Johannessen, Peter S Ross, Robie W Macdonald, Michael J Whiticar, Christopher J Lowe, Albert van Roodselaar

Environ Pollut. 2012 Dec;171:241-8.

PMID: 22960365

Abstract:

Polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were measured in sediments and benthic invertebrates near submarine municipal outfalls in Victoria and Vancouver, B.C., Canada, two areas with contrasting receiving environments. PBDE concentrations in wastewater exceeded those of the legacy PCBs by eight times at Vancouver and 35 times at Victoria. Total PBDE concentrations in benthic invertebrates were higher near Vancouver than Victoria, despite lower concentrations in sediments, and correlated with organic carbon-normalized concentrations in sediment. Principal Components Analysis indicated uptake of individual PBDE congeners was determined by sediment properties (organic carbon, grain size), while PCB congener uptake was governed by physico-chemical properties (octanol-water partitioning coefficient). Results suggest the utility of sediment quality guidelines for PBDEs and likely PCBs benefit if based on organic carbon-normalized concentrations. Also, where enhanced wastewater treatment increases the PBDEs to particulate organic carbon ratio in effluent, nearfield benthic invertebrates may face increased PBDE accumulation.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS2121254	PBDE/PCBs in Sediment			Price

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