Document Detail


Increases in food web cadmium following reductions in atmospheric inputs to some lakes.
MedLine Citation:
PMID:  12141486     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We measured the toxic metal cadmium (Cd) over a 13-year interval in lakes located near two metal smelters to determine whether reductions in atmospheric Cd emissions have led to reductions in the Cd present in aquatic food webs. Although Cd in the lake water consistently declined over time, Cd in animals increased in some lakes. This apparent contradiction was explained when we considered the simultaneous reductions that have occurred in lake water acidity; under these conditions, animal Cd can increase if there are insufficient hydrogen ions to out-compete Cd ions at biological uptake sites. We conclude that the risk to organisms from metals has increased in some lakes recovering from smelter emissions.
Authors:
Marie-Noële Croteau; Landis Hare; André Tessier
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  36     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-07-26     Completed Date:  2003-01-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3079-82     Citation Subset:  IM    
Affiliation:
Institut National de la Recherche Scientifique-Eau, Université du Québec, Sainte-Foy, Canada.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis,  pharmacokinetics*
Animals
Cadmium / analysis,  pharmacokinetics*
Food Chain*
Industry
Insects / chemistry
Larva / chemistry
Risk Assessment
Time Factors
Water Pollutants / analysis,  pharmacokinetics*
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Water Pollutants; 7440-43-9/Cadmium

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


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