Determination of chlorpyrifos in air, leaves and soil from a greenhouse by gas-chromatography with nitrogen-phosphorus detection, high-performance liquid chromatography and capillary electrophoresis.
Chlorpyrifos was determined in air, leaves and soil in a greenhouse in order to establish performance differences between gas-chromatography with nitrogen-phosphorus detection (GC-NPD) and high-performance liquid chromatographic and capillary electrophoretic methods and to assess the farm workers' risk of overexposure due to air exposure and/or skin contact with this compound. Results obtained indicate that the three analytical techniques, with the specific procedures described, can be used, although only GC-NPD provides an operative limit of detection in air. Chlorpyrifos levels in air are dependent on time and greenhouse ventilation, whereas it remains for a long time on leaf surfaces and soil. As a consequence, specific instructions can be established for farm workers in order to avoid skin and respiratory exposure to chlorpyrifos.
Guardino
X
X
Instituto Nacional de Seguridad e Higiene en el Trabajo, Centro Nacional de Condiciones de Trabajo, Barcelona, Spain.
Obiols
J
J
Rosell
M G
MG
Farran
A
A
Serra
C
C
D000383:Agriculture; D000388:Air / Q000032:analysis*; D004390:Chlorpyrifos / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D019075:Electrophoresis, Capillary / Q000379:methods*; D007306:Insecticides / Q000032:analysis*; D016273:Occupational Exposure; D018515:Plant Leaves / Q000737:chemistry*; D012987:Soil / Q000032:analysis*
D007306:Insecticides; D012987:Soil; D004390:Chlorpyrifos