Document Detail


Sources and pathways of selected organochlorine pesticides to the Arctic and the effect of pathway divergence on HCH trends in biota: a review.
MedLine Citation:
PMID:  15866269     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Historical global usage and emissions for organochlorine pesticides (OCPs), including hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethane (DDT), toxaphene and endosulfan, are presented. Relationships between the air concentrations of these OCPs and their global emissions are also discussed. Differences between the pathways of alpha- and beta-HCH to the Arctic Ocean are described in the context of environmental concentrating and diluting processes. These concentrating and diluting processes are shown to control the temporal and spatial loading of northern oceans and that the HCH burdens in marine biota from these oceans respond accordingly. The HCHs provide an elegant example of how hemispheric-scale solvent switching processes can alter the ocean into which an HCH congener partitions, how air-water partitioning controls the pathway for HCHs entering the Arctic, and how the various pathways impact spatial and temporal trends of HCH residues in arctic animals feeding out of marine and terrestrial foodwebs.
Authors:
Y F Li; R W Macdonald
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  The Science of the total environment     Volume:  342     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-05-03     Completed Date:  2005-06-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  87-106     Citation Subset:  IM    
Affiliation:
Meteorological Service of Canada, Environment Canada, 4905 Dufferin Street, Downsview, ON, Canada M3H 5T4. yi-fan.li@ec.gc.ca
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MeSH Terms
Descriptor/Qualifier:
Animals
Arctic Regions
Biological Availability
Diet
Food Chain*
Hydrocarbons, Chlorinated / chemistry,  pharmacokinetics*
Pesticides / chemistry,  pharmacokinetics*
Tissue Distribution
Water Movements
Water Pollutants, Chemical / pharmacokinetics*
Chemical
Reg. No./Substance:
0/Hydrocarbons, Chlorinated; 0/Pesticides; 0/Water Pollutants, Chemical

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