Sulfur gases at 1 ppm

sample/matrix

sulfur gases in air at 1ppm, 250 mL bulb

SPME fiber

Carboxen/PDMS, 75 μm (57318)

extraction

headspace, 5 min, ambient temp

desorption process

2 min, 250 °C

column

Supel-Q PLOT, 30 m × 0.32 mm I.D. (24242)

oven

45°C (0.75 min) to 250°C at 25°C/min

inj. temp.

splitless/split (closed 2 min), 0.75 mm I.D. liner

detector

MS quadrupole, m/z = 32 - 125 (0.6sec/scan)

carrier gas

helium, 25 cm/sec