Document Detail


A dynamic multimedia environmental and bioaccumulation model for brominated flame retardants in Lake Huron and Lake Erie, USA.
MedLine Citation:
PMID:  21312244     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) may pose a worldwide pollution problem because of their persistence, long-range transport capability, and predisposition to bioaccumulate. The ubiquitous presence of PBBs and PBDEs has heightened interest in determination of their fate. We report results for a fugacity-based dynamic environmental and bioaccumulation model of the fate of hexabromobiphenyl (hexaBB) discharged into the Saginaw Bay region of Lake Huron, USA. We calculated transient fugacity profiles of hexaBB in Lake Huron and Lake Erie water and sediment during the 1970s, 1980s, and 1990s. The hexaBB concentrations in the environmental compartments were used as inputs for a dynamic bioaccumulation model of Lake Huron and Lake Erie aquatic biota. The model results indicate that the sediment compartments of Lakes Huron and Erie serve as reservoirs for the accumulation and slow transfer of hexaBB to the food web constituents of these lakes. We present bioaccumulation factors (BAFs) and compare the predicted hexaBB concentrations in lake trout from the bioaccumulation model with measurements during the period 1980 to 2000. An uncertainty analysis for this model suggests that errors associated with input parameter uncertainty can be reduced by refining estimates of the sediment degradation half-life of hexaBB. The corroborated PBB model has carryover application for modeling the fate of polybrominated diphenyl ether (PBDE) contaminants in the Great Lakes. By fitting model outputs to field measurement data using the transformed least square fit method, we report estimations of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) emission rates into the Lake Huron and Lake Erie watershed areas.
Authors:
Dong-Hee Lim; Christian M Lastoskie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-03-08
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  30     ISSN:  1552-8618     ISO Abbreviation:  Environ. Toxicol. Chem.     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-04-11     Completed Date:  2011-06-01     Revised Date:  2013-08-12    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1018-25     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 SETAC.
Affiliation:
Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, Michigan, USA.
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MeSH Terms
Descriptor/Qualifier:
Environmental Monitoring
Flame Retardants / analysis*,  metabolism
Food Chain
Fresh Water / chemistry*
Geologic Sediments / chemistry
Great Lakes Region
Halogenated Diphenyl Ethers / analysis*,  metabolism
Models, Biological*
Polybrominated Biphenyls / analysis*,  metabolism
Soil / chemistry
Water Pollutants, Chemical / analysis*,  metabolism
Water Pollution, Chemical / statistics & numerical data
Chemical
Reg. No./Substance:
0/Flame Retardants; 0/Halogenated Diphenyl Ethers; 0/Polybrominated Biphenyls; 0/Soil; 0/Water Pollutants, Chemical; 0N97R5X10X/2,2',4,4'-tetrabromodiphenyl ether

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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