title: Collection and determination of COUNTER (terbufos) insecticide in air.
abstract: A method has been developed and validated for the personal monitoring of COUNTER, O-O-diethyl-S-[(tert-butylthio)methyl]phosphorodithioate, terbufos, in air. COUNTER insecticide vapor is collected on standard NIOSH-type charcoal tubes at 150 mL/min for an 8-hour sampling period. When COUNTER insecticide exists as a dust as well as a vapor, a sampling train consisting of a mixed cellulose ester filter followed by a standard charcoal tube is used. The collected material in each case is desorbed with toluene and analyzed by gas chromatography using a nitrogen-phosphorus detector. Average collection efficiencies of 91.9% were obtained for the charcoal tube, and filter-tube sampling train systems. The sample generation system, collection medium, and analytical methodology are discussed.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002606:Charcoal; D002849:Chromatography, Gas; D004391:Dust / Q000032:analysis; D004781:Environmental Exposure; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D007306:Insecticides / Q000032:analysis*; D009946:Organothiophosphorus Compounds / Q000032:analysis*; D011482:Protective Devices
chemical_list: D000393:Air Pollutants; D004391:Dust; D007306:Insecticides; D009946:Organothiophosphorus Compounds; D002606:Charcoal; C012568:terbufos