Organophosphorus pesticides by OSHA Method 62

adsorbent tube

ORBO-49P (20350)

column

SPB-20, 60 m × 0.53 mm I.D., 1.0 μm film (available on request)

oven

200 °C (2 min) to 250 °C at 4 °C/min

detector

FPD, 300 °C

carrier gas

helium, 8 mL/min

injection

1 μL direct injection, 220 °C (packed column injector)

sample

calibration standard: 12 μg/mL each pesticide, 78 μg/mL tributyl phosphate (int. std.) in hexane (blank: 270 mg Supelpak 20, glass fiber filter desorbed in toluene + 78 μg/mL tributyl phosphate.)