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Document ID (ISN)74775
CIS number 00-480
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1999
Convention or series no.
Author(s) Simcox N.J., Camp J., Kalman D., Stebbins A., Bellamy G., Lee I.C., Fenske R.
Title Farmworker exposure to organophosphorus pesticide residues during apple thinning in central Washington State
Bibliographic information Nov.-Dec. 1999, Vol.60, No.6, p.752-761. Illus. 26 ref.
Abstract The exposure of twenty workers from three work sites to azinphos-methyl over an entire apple-thinning season was studied. Exposure potential was estimated by foliar residue measurements, and individual exposures were estimated by biological monitoring through urinary metabolites. Measurable azinphos-methyl residues were found on apple foliage at all sites throughout the six-week sampling period, indicating continuous exposure potential (median residue level of 0.5µg/cm2). Measurable levels of the urinary dialkylphosphate metabolite, DMTP, were found in virtually all urine samples, with concentrations differing significantly across the three sites (0.53, 0.29 and 0.90µg/ml), and with intraindividual variability much greater than interindividual differences. Group mean DMTP concentrations at each site fluctuated according to foliar residue levels.
Descriptors (primary) guthion; organophosphorus compounds; exposure tests; fruit picking; agriculture; pesticides
Descriptors (secondary) cholinesterase; exposure evaluation; methidathion; Washington; urinary metabolites
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Agriculture, fishing, animal husbandry
Broad subject area(s) Chemical safety
Browse category(ies) Biological monitoring
Esters and salts
Agricultural chemicals