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Industrial hygiene report of mechanical cotton picker operator exposure to DEF at Belridge Farms in Bakersfield, California.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, IWS 80-19, 1980 Sep; :1-8
Worker exposure to s,s,s-tributylphosphorotrithioate (78488) (DEF) and general work conditions were investigated at the Belridge Farms (SIC-0722) in Bakersville, California, on November 15 and 17, 1978. Thirty-three personal air and 11 dermal samples were collected and analyzed using gas chromatographic methods. Minor and major injuries were treated by a local physician or hospital, respectively. Cholinesterase determinations were made every week. No preemployment examinations were given. Air DEF concentrations ranged from 6.9 to 83.4 nanograms per cubic meter, and dermal samples ranged from 0.05 to 1.70 milligrams per 8 hours. The author recommends additional sampling during typical weather conditions.
NIOSH-Author; NIOSH-Survey; Field-Study; Region-9; Air-sampling; Skin-tests; Gas-chromatography
Field Studies; Industry Wide
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division