US EPA Method 8015 (modified): GC Analysis of Gasoline Range Organics (GRO) on VOCOL^® after Purge & Trap using "M" Trap

sample/matrix

Each analyte at 50 ppb in 5 mL water

purge trap

M trap (20079-U)

purge

40 mL/min at 25 °C for 11 min

dry purge

2 min

desorption preheat

220 °C

desorption process

40 mL/min at 225 °C for 2 min

bake

260 °C for 10 min

transfer line/valve temp.

110 °C

column

VOCOL, 30 m x 0.25 mm I.D., 1.5 μm (24205-U)

oven

60 °C (2 min), 8 °C/min to 165 °C, 25 °C/min to 220 °C (5 min)

detector

FID, 250 °C

carrier gas

helium, 1.0 mL/min

injection

30:1 split

sample

0.75 mm I.D. SPME

inj. temp.

200 °C