Document Detail

The global distribution of PCBs and organochlorine pesticides in butter.
MedLine Citation:
PMID:  11347908     Owner:  NLM     Status:  MEDLINE    
In this study we explored the use of butter as a sampling matrix to reflect the regional and global scale distribution of PCBs and selected organochlorine pesticides/metabolites in air. This was because persistent organic pollutants (POPs) concentrate in dairy fats, where concentrations are controlled by feed intake (primarily from pasture/silage), which is in turn primarily controlled by atmospheric deposition. Butter sigmaPCB concentrations varied by a factor of approximately 60 in 63 samples from 23 countries. They were highest in European and North American butter and lowest in southern hemisphere (Australian, New Zealand) samples, consistent with known patterns of historical global usage and estimated emissions. Concentrations in butter reflected differences in the propensity of PCB congeners to undergo long range atmospheric transport from global source regions to remote areas and the relatively even distribution of HCB in the global atmosphere. Concentrations of p,p'-DDT, p,p'-DDE, and HCH isomers all varied over many orders of magnitude in the butter samples, with highest levels in areas of current use (e.g. India and south/central America for DDT; India, China, and Spain for HCH). We conclude that butter is sensitive to local, regional, and global scale spatial and temporal atmospheric trends of many POPs and may therefore provide a useful sampling medium for monitoring purposes. However, to improve the quantitative information derived on air concentrations requires an awareness of climatic and livestock management factors which influence air-milk fat transfer processes.
O I Kalantzi; R E Alcock; P A Johnston; D Santillo; R L Stringer; G O Thomas; K C Jones
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Environmental science & technology     Volume:  35     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-05-11     Completed Date:  2001-07-19     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1013-8     Citation Subset:  IM    
Environmental Science Department, Institute of Environmental and Natural Sciences, Lancaster University, UK.
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MeSH Terms
Air Pollution / analysis
Animal Feed
Environmental Monitoring / methods*
Pesticide Residues / analysis*
Polychlorinated Biphenyls / analysis*
Sensitivity and Specificity
Time Factors
Reg. No./Substance:
0/Pesticide Residues; 0/Polychlorinated Biphenyls; 8029-34-3/Butter

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

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