Document Detail


Source and persistence of pesticides in a semi-confined chalk aquifer of southeast England.
MedLine Citation:
PMID:  16750876     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pesticide contamination in groundwater is an increasing problem that poses a significant long-term threat to water quality. Following the detection of elevated concentrations of diuron in boreholes in a semi-confined chalk aquifer from southeast England, a sampling programme was undertaken. Between 2003 and 2004 diuron was observed in 90% of groundwaters analysed. In 60% of groundwater samples metabolites of diuron were more prevalent than the parent compound. Longer-term (1989-2005) monitoring shows that pollution of the aquifer by atrazine, simazine, and more recently diuron, shows a positive correlation with periods of high groundwater levels. Results from groundwater residence time indicators suggest that the highest diuron concentrations are associated with waters containing the greatest proportion of recent recharge. There is some evidence to indicate that diuron occurrence can be spatially related to areas of urban and industrial development and is probably correlated with amenity usage.
Authors:
D J Lapworth; D C Gooddy
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Publication Detail:
Type:  Journal Article     Date:  2006-06-05
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  144     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-09-18     Completed Date:  2006-12-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  1031-44     Citation Subset:  IM    
Affiliation:
British Geological Survey, Maclean Building, Wallingford, Oxon OX10 8BB, UK.
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MeSH Terms
Descriptor/Qualifier:
Atrazine / analysis
Diuron / analysis
England
Environmental Monitoring / methods*
Fertilizers
Geologic Sediments
Humans
Pesticide Residues / analysis*
Rain
Seasons
Simazine / analysis
Urbanization
Water Pollution
Water Supply*
Chemical
Reg. No./Substance:
0/Fertilizers; 0/Pesticide Residues; 122-34-9/Simazine; 1912-24-9/Atrazine; 330-54-1/Diuron

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


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