Document Detail

Pyrethroid and organophosphorus pesticides in composite diet samples from Atlanta, USA adults.
MedLine Citation:
PMID:  19994894     Owner:  NLM     Status:  MEDLINE    
Four pyrethroid (permethrin, cyfluthrin, cypermethrin, deltamethrin) and 3 organophosphorus (chlorpyrifos, diazinon, malathion) pesticides were measured in 4 days of 24 h duplicate diet samples collected from 12 Atlanta adults over two cycles (2005-2006). Samples were composited into 9 categories, by food type, to evaluate their contribution to daily intakes. The resulting 437 samples were analyzed using a multiresidue method using liquid-liquid and solid-phase extraction followed by quantification via gas chromatograph with electron-capture detection. Total daily intakes (mg/kg-d) were calculated by summing the mass of a pesticide in all composites collected that day and dividing by body weight. Chlorpyrifos, diazinon, and cypermethrin in were detected in a range of composite types at frequencies > or =30%, whereas other pesticides were detected at lower frequencies. Concentrations ranged from the detection limits (0.38-0.88 ng/g) to several hundred ng/g, exceeding U.S. tolerances in a few cases. We also detected pesticides in some foods labeled organic. Total daily intakes were below the U.S. Environmental Protection Agency's oral reference doses, except in 6% of cases when the organophosphorus concentrations were summed. Results show frequent dietary exposure of our participants to the target pesticides from a range of food types.
Anne M Riederer; Ronald E Hunter; Steven W Hayden; P Barry Ryan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  44     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2009-12-30     Completed Date:  2010-03-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  483-90     Citation Subset:  IM    
Department of Environmental and Occupational Health, Rollins School of Public Health, Emory University, 1518 Clifton Road NE, Atlanta, Georgia 30322, USA.
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MeSH Terms
Chromatography, Gas
Organophosphorus Compounds / analysis*
Pesticides / analysis*
Pyrethrins / analysis*
Reg. No./Substance:
0/Organophosphorus Compounds; 0/Pesticides; 0/Pyrethrins

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

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