GC Analysis of Class 3 Residual Solvents on Equity-1 after SPME using 100 μm PDMS Fiber

sample/matrix

2 mL water + sodium chloride at 25% (pH 2) containing each analyte at 5 ppm, in a 4 mL vial

SPME fiber

100 μm PDMS, 24 ga manual (57300-U)

extraction

heated headspace, 60 °C for 5 min

desorption process

250 °C for 3 min

column

Equity-1, 10 m x 0.20 mm I.D., 1.2 μm (28043-U)

oven

40 °C (0.75 min), 20 °C/min to 200 °C (10 min)

inj. temp.

250 °C

detector

FID

carrier gas

helium, 35 cm/sec @ 4

injection

5:1 split

liner

0.75 mm I.D. SPME type