Table 5 Analytical GC method instrument setup

Gas Chromatography

Model 6850 (Agilent)

Flame ionization detector (FID)

Evaluation software Laura 6 (LabLogic)

Column

Res-Solv (30 m × 0.53 mm id × 1.0 µm film), autoinjector

Split ratio

1:78

Gases

Helium (carrier gas), hydrogen and synthetic air

Injection volume:

2 µL

Inlet temperature

250 °C

Inlet pressure

2.76 PSI

Temperature gradient

35 °C isotherm for 4 min after injection, ramp to 100 °C at 80 °C/min, hold at 100 °C for 30 s, ramp to 220 °C at 80 °C/min, hold at 220 °C for 30 s, and cool to 35 °C”