Correlation of actual strawberry harvester exposure with that predicted from abamectin dislodgeable foliar residues.
Sixteen male strawberry harvesters were monitored during two 3-h harvesting periods for dermal exposure to abamectin, a miticide/insecticide.
Upper body exposures were monitored by cotton undershirt dosimetry, hand rinses, and facial washes.
Exposure was greatest to the hands (833 ng/h) followed by the torso (380 ng/h) with negligible residues detected on the face.
With<1% dermal penetration, the average systemic exposure was calculated to be 1.36 ng/kg/day.
The ratio of the no-observed-effect level (NOEL) of 50 mug/kg/day to the worker exposure of 1.36 ng/kg/day yielded a margin of exposure (MOE) of 36 800.
Abamectin foliar residues ranged from 40.7 to 0.17 ng/cm2 at 2 h and 7 days after the second application, respectively.
Dislodgeable foliar residue (DFR) data at the harvest time of 3 days after the second application, 0.84 ng/cm2, combined with the Zweig transfer factor (5000 cm2/h) and a dermal penetration of 1% resulted in a predicted worker exposure of only 5.6 ng/kg/day and a corresponding MOE of 8930.
These results suggest that DFR data may be used to conservatively predict worker exposure to abamectin.
Mots-clés Pascal : Fraise(fruit), Insecticide microbien, Récolte, Industrie alimentaire, Pesticide, Exposition professionnelle, Médecine travail, Prédiction, Résidu, Feuille végétal, Homme, Avermectine, Abamectine
Mots-clés Pascal anglais : Strawberry, Microbial insecticide, Harvesting, Food industry, Pesticides, Occupational exposure, Occupational medicine, Prediction, Residue, Plant leaf, Human, Avermectins, Abamectin
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0340357
Code Inist : 002B03G. Création : 27/11/1998.