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Industrial Hygiene Report of Mechanical Cotton Picker Operator Exposure to DEF at Belridge Farms in Bakersfield, California.
NIOSH 1980 Sep:8 pages
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; IWS-80-19; Field-Study; Region-9; Air-sampling; Skin-tests; Gas-chromatography;
NTIS Accession No.
NIOSH, Division of Surveillance, Hazard Evaluations and Field Studies, Industry-wide Studies Branch, Industrial Hygiene Section, 8 pages
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division