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Longitudinal investigation of dietary exposure to selected pesticides.
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MedLine Citation:
PMID:  11266324     Owner:  NLM     Status:  MEDLINE    
Between September 1995 and September 1996, 4-day composite duplicate plate samples (379 solid food samples and 303 beverage samples) were obtained from a stratified random sample of 75 individuals in Maryland and analyzed for the presence of 10 pesticides. Samples were collected in each of six approximately equally spaced cycles as part of a larger pilot investigation of longitudinal exposure to pesticides and other elements. Chlorpyrifos was detected in 38.3% of the solid food samples, malathion in 75.2%, and p,p'-DDE in 21.4%. Other pesticides were detected in less than 10% of the solid food samples. Pesticide residues were not detected in duplicate beverage samples. In solid food samples, the mean concentration of chlorpyrifos was 0.7 (SD 1.7) microg/kg, 1.8 (2.1) for malathion, and 0.2 (0.6) for p,p'-DDE. The detection rate and mean concentration of chlorpyrifos, malathion, and p,p'-DDE varied by a factor of 2-3 among sampling cycles and significantly according to results from several statistical analyses. Co-occurrence of chlorpyrifos and malathion in solid food samples was found relatively frequently and also varied with time. Pesticides were detected in food samples with greatest frequency in spring and summer months and with lowest frequency in winter months. These results support the hypothesis that 4-day average exposure to chlorpyrifos and malathion varies over time for this population mean and for individual members of the population and that correlation between exposures to these two organophosphate pesticides can occur. The measurements of pesticide levels in duplicate plate samples presented here can be used to evaluate and set parameters for dietary exposure models.
D L MacIntosh; C W Kabiru; P B Ryan
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Publication Detail:
Type:  Comment; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Environmental health perspectives     Volume:  109     ISSN:  0091-6765     ISO Abbreviation:  Environ. Health Perspect.     Publication Date:  2001 Feb 
Date Detail:
Created Date:  2001-03-27     Completed Date:  2001-05-21     Revised Date:  2008-11-20    
Medline Journal Info:
Nlm Unique ID:  0330411     Medline TA:  Environ Health Perspect     Country:  United States    
Other Details:
Languages:  eng     Pagination:  145-50     Citation Subset:  IM    
Department of Environmental Health Science, College of Agricultural and Environmental Sciences, University of Georgia, Athens, Georgia, USA.
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MeSH Terms
Baltimore / epidemiology
Chlorpyrifos / adverse effects
Dichlorodiphenyl Dichloroethylene / adverse effects
Diet / adverse effects*
Environmental Exposure / adverse effects,  analysis*
Food Contamination / analysis*
Longitudinal Studies
Malathion / adverse effects
Pesticides / adverse effects*
Pilot Projects
Sensitivity and Specificity
Reg. No./Substance:
0/Pesticides; 121-75-5/Malathion; 2921-88-2/Chlorpyrifos; 72-55-9/Dichlorodiphenyl Dichloroethylene
Comment On:
Environ Health Perspect. 2001 Feb;109(2):A85   [PMID:  11317977 ]

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

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Journal Information
Journal ID (nlm-ta): Environ Health Perspect
ISSN: 0091-6765
Article Information
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Print publication date: Month: 2 Year: 2001
Volume: 109 Issue: 2
First Page: 145 Last Page: 150
ID: 1240634
PubMed Id: 11266324
Publisher Item Identifier: sc271_5_1835

Longitudinal investigation of dietary exposure to selected pesticides.
D L MacIntosh
C W Kabiru
P B Ryan
Department of Environmental Health Science, College of Agricultural and Environmental Sciences, University of Georgia, Athens, Georgia, USA.

Article Categories:
  • Research Article

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