Abstract:
BACKGROUND:Community Participatory Approach to Measuring Farmworker Pesticide Exposure, PACE3, used a longitudinal design to document pesticide biomarkers among farmworkers. This article presents an overview of PACE3 and provides a descriptive analysis of participant characteristics and one set of pesticide biomarkers, the dialkylphosphate (DAP) urinary metabolites of organophosphorus (OP) pesticides. METHODS:Two hundred eighty seven farmworkers were recruited during 2007 from 44 farmworker camps in 11 eastern North Carolina counties. Participants provided interviews, urine samples, blood samples, and saliva samples up to four times at monthly intervals beginning in May. A total of 939 data points were collected. RESULTS:Farmworkers were largely men (91.3%) from Mexico (94.8%) with a mean age of 33.7 years (SE 0.82); 23.3% spoke an indigenous language. Across all data points, frequencies of detection and median urinary concentrations were 41.3% and 0.96 microg/L for dimethylphosphate (DMP), 78.3% and 3.61 microg/L for dimethylthiophosphate (DMTP), 33.3% and 0.04 microg/L for dimethyldithiophosphate (DMDTP), 40.5% and 0.87 microg/L for diethylphosphate (DEP), 32.3% and 0.17 microg/L for diethylthiophosphate (DETP), and 8.09% and 0.00 microg/L for diethyldithiophosphate (DEDTP). The frequencies of detection and urinary concentrations of the DAP metabolites increased during the season. CONCLUSIONS:More PACE3 participants were from Mexico, male, migrant workers, and spoke an indigenous language compared to national data. PACE3 participants had comparable frequencies of detection and urinary metabolite concentrations with participants in other studies. Variability in the frequencies of detection and urinary concentrations of the DAP metabolites indicates the importance of longitudinal studies of biomarkers of currently used pesticides in farmworker populations.
journal_name
Am J Ind Medjournal_title
American journal of industrial medicineauthors
Arcury TA,Grzywacz JG,Chen H,Vallejos QM,Galván L,Whalley LE,Isom S,Barr DB,Quandt SAdoi
10.1002/ajim.20703subject
Has Abstractpub_date
2009-07-01 00:00:00pages
539-50issue
7eissn
0271-3586issn
1097-0274journal_volume
52pub_type
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