Journal
ENVIRONMENTAL POLLUTION
Volume 171, Issue -, Pages 241-248Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.07.023
Keywords
Polybrominated diphenyl ethers; Polychlorinated biphenyls; Organic carbon; Marine benthic invertebrates; Municipal outfalls
Categories
Funding
- NSERC-IPS
- Capital Regional District
- Metro Vancouver
- Environment Canada
- Fisheries and Oceans Canada
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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 physicochemical 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. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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