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Minimizing Dermal Exposure to Pesticides in Greenhouses.

PB92121623

Publication Date	1990
Personal Author	Fenske, R. A.
Page Count	38
Abstract	A study was conducted to survey major variables influencing exposure during mixing and application of pesticides in greenhouses, to conduct exposure assessment studies under well defined conditions, and to field test the fluorescent tracer methodology for its utility in evaluating dermal exposure. Three types of application procedures dominated the greenhouse activity: handgunning, thermal fogging, and drenching. Thermal fogging had the highest potential for exposure, but this operation was performed by the most experienced of the workers and elaborate protective measures were followed. Drenching procedures were aimed at watering and chemically treating the roots of plants and involved application of a very coarse water stream onto the base of plants under low pressure. Handgunning was aimed at treating plant foliage and involved spraying leaves under low to high pressure. Most exposures to workers occurred during handgunning applications. Better ventilation and applicator training could help lower these exposures. Contact with treated foliage was one manner in which exposure occurred after the pesticides and other chemicals were applied to the plants. Using fluorescent tracer methodology, it was possible to visualize exposure patterns due to the presence or absence of ventilation and obtain dramatic evidence of protective clothing failures.
Keywords	Pesticides Skin(Anatomy) Greenhouses Occupational exposure Health hazards Risk assessment Field tests Spray nozzles Protective clothing Fluorescent dyes Pesticide applicators
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68E - Pesticides Pollution & Control 68G - Environmental Health & Safety 98C - Agricultural Equipment, Facilities, & Operations 57U - Public Health & Industrial Medicine
Corporate Authors	New Jersey Agricultural Experiment Station, New Brunswick.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB88-219381. Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept. 1 May 86-30 Apr 90.
NTIS Issue Number	199205

Minimizing Dermal Exposure to Pesticides in Greenhouses.

Minimizing Dermal Exposure to Pesticides in Greenhouses.
PB92121623

Publication Date	1990
Personal Author	Fenske, R. A.
Page Count	38
Abstract	A study was conducted to survey major variables influencing exposure during mixing and application of pesticides in greenhouses, to conduct exposure assessment studies under well defined conditions, and to field test the fluorescent tracer methodology for its utility in evaluating dermal exposure. Three types of application procedures dominated the greenhouse activity: handgunning, thermal fogging, and drenching. Thermal fogging had the highest potential for exposure, but this operation was performed by the most experienced of the workers and elaborate protective measures were followed. Drenching procedures were aimed at watering and chemically treating the roots of plants and involved application of a very coarse water stream onto the base of plants under low pressure. Handgunning was aimed at treating plant foliage and involved spraying leaves under low to high pressure. Most exposures to workers occurred during handgunning applications. Better ventilation and applicator training could help lower these exposures. Contact with treated foliage was one manner in which exposure occurred after the pesticides and other chemicals were applied to the plants. Using fluorescent tracer methodology, it was possible to visualize exposure patterns due to the presence or absence of ventilation and obtain dramatic evidence of protective clothing failures.
Keywords	Pesticides Skin(Anatomy) Greenhouses Occupational exposure Health hazards Risk assessment Field tests Spray nozzles Protective clothing Fluorescent dyes Pesticide applicators
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	68E - Pesticides Pollution & Control 68G - Environmental Health & Safety 98C - Agricultural Equipment, Facilities, & Operations 57U - Public Health & Industrial Medicine
Corporate Authors	New Jersey Agricultural Experiment Station, New Brunswick.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	See also PB88-219381. Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept. 1 May 86-30 Apr 90.
NTIS Issue Number	199205