Document Detail


Concentrations and hazard assessment of PCBs, organochlorine pesticides and mercury in fish species from the Upper Thames: river pollution and its potential effects on top predators.
MedLine Citation:
PMID:  12656245     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Aquatic environmental contamination levels of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs) and heavy metals in the Upper Thames catchment area, UK were assessed on the basis of fish muscle analysis in wet weight, and their effects on top predators were assessed. The contamination levels of lead, cadmium, dichloro-diphenyl-trichloroethane (DDT) and its metabolites were found to be low (undetectable) in the area. Average mercury contamination level varied between 55 and 342 microg/kg, dieldrin between less than 0.09 and 36.8, lindane between < 0.08 and 4.94, and PCBs between < 0.77 and 3.32. Eels (Anguilla anguilla) had always much higher concentration of OCPs compared to the other fishes from the same monitoring sites. The environmental contamination level of PCBs may be partly associated with industrial and human activities, however, it was difficult to find such associations for mercury level. The hazard indices (HI) of both dieldrin and PCBs were below 1 for mink (Mustela vison). However, the HI of mercury of the all fish species from all monitoring sites are above 1 for mink. These contamination levels may be less harmful to polecats (Mustela putorius), but more so to otters (Lutra lutra) as their diets are dominated by aquatic prey.
Authors:
N Yamaguchi; D Gazzard; G Scholey; D W Macdonald
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  50     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2003-03-26     Completed Date:  2003-04-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  265-73     Citation Subset:  IM    
Affiliation:
Department of Zoology, Wildlife Conservation Research Unit, South Parks Road, Oxford OX1 3PS, UK.
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MeSH Terms
Descriptor/Qualifier:
Animals
England
Environmental Monitoring*
Fishes
Food Chain*
Insecticides / analysis*,  toxicity
Mass Spectrometry / methods
Mercury / analysis*,  toxicity
Polychlorinated Biphenyls / analysis*,  toxicity
Species Specificity
Spectrometry, Fluorescence / methods
Water Pollutants, Chemical / analysis*,  toxicity
Chemical
Reg. No./Substance:
0/Insecticides; 0/Polychlorinated Biphenyls; 0/Water Pollutants, Chemical; 7439-97-6/Mercury

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