Document Detail


The trophodynamics of PCBs, including mono- and non-ortho congeners, in the food web of North-Central Lake Ontario.
MedLine Citation:
PMID:  9241874     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The distribution of polychlorinated biphenyls (PCBs) in the food-web of Lake Ontario was studied to determine the parameters that control the trophodynamics of PCB congeners; including toxic non-ortho and mono-ortho PCBs. 'Biomagnification' of PCBs was evident in the food-web as total PCBs increased through trophic levels when concentrations were calculated on both a wet wt. and lipid weight basis; although there was no evidence of biomagnification between forage fish and piscivorous fish. Biomagnification was greatest for congeners with log octanol-water partition (log Kow) coefficients between 6 and 7.5. Non-ortho congeners 77 and 126, and congener 151 were not biomagnified to the extent of other congeners with similar Kow, which was attributed to high rates of metabolic clearance of these compounds. The Toxic Equivalent Quantities (TEQs) associated with non-ortho and mono-ortho PCBs increased throughout the Lake Ontario food-web. The high TEQ observed in herring gull eggs was primarily the result of very high concentrations of congener 126 in this component of the food web.
Authors:
T L Metcalfe; C D Metcalfe
Related Documents :
16529574 - Influence of tris(4-chlorophenyl)methanol, non-ortho pcb 77 and gamma-hexachlorocyclohe...
16904734 - Dietary composition and contaminants in north greenland, in the 1970s and 2004.
15946704 - Increased phagocytic activity in contaminated seastars (asterias rubens) collected in t...
17306864 - Persistent organic pollutants in outmigrant juvenile chinook salmon from the lower colu...
24188264 - Chilled milk-based desserts as emerging probiotic and prebiotic products.
12597524 - Day/night food consumption in mice is strain and age-dependent.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Science of the total environment     Volume:  201     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  1997 Aug 
Date Detail:
Created Date:  1997-08-21     Completed Date:  1997-08-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  245-72     Citation Subset:  IM    
Affiliation:
Environmental and Resource Studies Program, Trent University, Peterborough, Ontario, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animal Feed / analysis*
Animals
Birds
Chromatography, Gas
Ecosystem*
Female
Fishes
Fresh Water / chemistry
Geologic Sediments / chemistry
Great Lakes Region
Male
Polychlorinated Biphenyls / analysis*
Water Pollutants, Chemical / analysis*
Chemical
Reg. No./Substance:
0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical

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


Previous Document:  Variations in the concentration of plutonium, strontium-90 and total alpha-emitters in human teeth c...
Next Document:  Sorption/desorption of radioactive contaminants by sediment from the Kara Sea.