Industrial Hygiene Report of Mechanical Cotton Picker Operator Exposure to DEF at Harold O'Banion Farming, P.O. Box 277, Dos Palos, California.
NIOSH 1980 Sep:405-414
Mechanical cotton picker operator exposures to s,s,s-tributyl phosphorotrithioate (78488) (DEF), were characterized by an industrial hygiene survey of the mechanical cotton picking operations conducted by O'Banion Farming at the O'Banion farm (SIC- Respiratory samples were collected using an impinger pump. Dermal samples were collected on 4 inch square gauze pads attached to the operators' clothing. All samples were analyzed by chromatography. Respiratory samples contained 24.1 to 200.6 nanograms of DEF per cubic meter, and the single dermal sample contained 2.79 milligrams for an 8 hour period. Sampling was conducted after heavy rains when the weather was overcast and humid. The author notes that no exposure standard exists for DEF. Further sampling is recommended during more typical weather conditions conducive to greater exposure concentrations.
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-80-17; Region-9; Cotton-pickers; Health-survey; Agriculture; Sampling; Sampling-equipment; Occupational-health; Standards;
NTIS Accession No.
Industrial Hygiene Section Industry-wide Studies Branch Division of Surveillance, Hazard Evaluations and Field Studies National Institute for Occupational Safety and Health Cincinnati, Ohio