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Industrial Hygiene Characterization of Grain Elevator Workers' Exposures to Phosphine during Bulk Grain Fumigation with Aluminum Phosphide.

PB93188464

Publication Date	1987
Personal Author	Zaebst, D. D.; Blade, L. M.; Morelli-Schroth, P.; Woodfin, W. J.; Burroughs, G. E.
Page Count	78
Abstract	A series of industrial hygiene surveys was conducted in 1985 and 1986 to assess worker exposures to phosphine gas during the addition of aluminum-phosphide pellets to wheat prior to and during long term storage. Monitoring revealed that the use of aluminum-phosphide can result in excessive exposures when compared to relevant criteria, even under very cold air temperatures. Exposure levels ranged up to 1.6 parts per million (ppm) for full shift personnel, which was more than five times the OSHA permissible exposure limit of 0.3ppm. Filling and emptying an automatic tablet dispenser produced short term exposures as high as 52ppm. High ambient concentrations of phosphine were found near automatic tablet dispensers. Part of the exposure was due to uncontrolled point sources and to the lack of appropriate local exhaust ventilation. There was also a direct exposure relationship to the amount of fumigation begin performed.
Keywords	Grain elevators Fumigation Pesticides Agricultural workers Exposure Health hazards Gas sampling Occupational safety and health Toxicity Tolerances(Physiology) Ventilation Point sources Phosphate gas Aluminum phosphide Agricultural chemicals
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68E - Pesticides Pollution & Control 94D - Job Environment 98H - Food Technology 98C - Agricultural Equipment, Facilities, & Operations
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Composite rept.
NTIS Issue Number	199315

Industrial Hygiene Characterization of Grain Elevator Workers' Exposures to Phosphine during Bulk Grain Fumigation with Aluminum Phosphide.

Industrial Hygiene Characterization of Grain Elevator Workers' Exposures to Phosphine during Bulk Grain Fumigation with Aluminum Phosphide.
PB93188464

Publication Date	1987
Personal Author	Zaebst, D. D.; Blade, L. M.; Morelli-Schroth, P.; Woodfin, W. J.; Burroughs, G. E.
Page Count	78
Abstract	A series of industrial hygiene surveys was conducted in 1985 and 1986 to assess worker exposures to phosphine gas during the addition of aluminum-phosphide pellets to wheat prior to and during long term storage. Monitoring revealed that the use of aluminum-phosphide can result in excessive exposures when compared to relevant criteria, even under very cold air temperatures. Exposure levels ranged up to 1.6 parts per million (ppm) for full shift personnel, which was more than five times the OSHA permissible exposure limit of 0.3ppm. Filling and emptying an automatic tablet dispenser produced short term exposures as high as 52ppm. High ambient concentrations of phosphine were found near automatic tablet dispensers. Part of the exposure was due to uncontrolled point sources and to the lack of appropriate local exhaust ventilation. There was also a direct exposure relationship to the amount of fumigation begin performed.
Keywords	Grain elevators Fumigation Pesticides Agricultural workers Exposure Health hazards Gas sampling Occupational safety and health Toxicity Tolerances(Physiology) Ventilation Point sources Phosphate gas Aluminum phosphide Agricultural chemicals
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 68E - Pesticides Pollution & Control 94D - Job Environment 98H - Food Technology 98C - Agricultural Equipment, Facilities, & Operations
Corporate Authors	National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Composite rept.
NTIS Issue Number	199315