US EPA法 524.2: GCによる揮発性物質の分析、VOCOL^®、Purge & Trap処理、 "K" Trap使用

sample

10 ppb each component in 5 mL water

purge trap

VOCARB 3000 (21066-U)

purge

40 mL/min for 11 min

dry purge

3 min

desorption process

250 °C for 4 min

bake

280 °C for 10 min

column

VOCOL, 105 m × 0.53 mm I.D., 3.0 μm (25358)

oven

35 °C (10 min), 4 °C/min to 200 °C (10 min)

scan range

m/z = 35-260 at 0.6 scan/sec

carrier gas

helium, 10 mL/min