US EPA Method 8141 organophosphorus pesticides

column

Equity-5, 30m × 0.25 mm I.D., 0.25 μm (28089-U)

oven

120 °C (3 min), 5 °C/min, to 300 °C (5 min)

inj. temp.

250 °C

detector

NPD, 320 °C

carrier gas

helium, 25 cm/sec @ 120 °C

injection

1.0 μL splitless (0.5 min)

liner

4 mm I.D., double taper

sample

40 ng on-column of a custom organophosphorus pesticides mix