Bioconcentration and biomagnification of polybrominated diphenyl ethers (PBDEs) through lower-trophic-level coastal marine food web

Bivalves, crabs, fishes, seawater, and sediment collected from the inner part of Tokyo Bay, Japan, were measured for 20 polybrominated diphenyl ether (PBDE) and 5 polychlorinated biphenyl (PCB) congeners. To determine the trophic levels of the organisms, carbon and nitrogen stable isotope ratios (δ1...

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Bibliographic Details
Published in:Marine pollution bulletin 2009-08, Vol.58 (8), p.1217-1224
Main Authors: Mizukawa, Kaoruko, Takada, Hideshige, Takeuchi, Ichiro, Ikemoto, Tokutaka, Omori, Koji, Tsuchiya, Kotaro
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Applied ecology
Bioaccumulation
Biological and medical sciences
Brominated flame retardant
Carbon
Circuit boards
Coastal
Coastal biota
Congeners
Correlation
Decapoda
Ecotoxicology, biological effects of pollution
Ethers
Food Chain
Fundamental and applied biological sciences. Psychology
Halogenated Diphenyl Ethers - analysis
Halogenated Diphenyl Ethers - metabolism
Japan
Marine
Marine and brackish environment
Marine Biology
Pacific Ocean
Partitioning
Printed circuits
Sea water ecosystems
Synecology
Water Pollutants, Chemical - analysis
Water Pollutants, Chemical - metabolism
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Summary:Bivalves, crabs, fishes, seawater, and sediment collected from the inner part of Tokyo Bay, Japan, were measured for 20 polybrominated diphenyl ether (PBDE) and 5 polychlorinated biphenyl (PCB) congeners. To determine the trophic levels of the organisms, carbon and nitrogen stable isotope ratios (δ13C and δ15N) were also measured. Bioconcentration factors of PBDE and PCB congeners increased as the octanol–water partition coefficient (Kow) rose to log Kow=7, above which they decreased again. Biomagnification of PCBs and several PBDE congeners (BDE47, 99, 100, 153 and 154) up the trophic ladder was confirmed by a positive correlation between their concentrations and δ15N. Other PBDE congeners showed a negative or no correlation, suggesting their biotransformation through metabolism. The more hydrophobic congeners of both PBDEs (Br=2–6) and PCBs (Cl=6–9) were biomagnified more. It thus appears that PBDEs are less biomagnified than PCBs.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2009.03.008