| Parameters | Conditions |
|---|---|
| Instrument | ACME 6500 Gas chromatography (Young Lin Co., Korea) |
| Detector | FID (Flame ionization detector) |
| Column | HP-FFAP (25 m×0.32 mm×0.52 μm, Supelco, USA) |
| Air & hydrogen flow rate | 350 & 35 (mL/min) |
| Injector temperature | 230°C (splitless mode) |
| Carrier gas | He |
| Flow rate | 1.0 mL/min |
| Detector temperature | 250°C (Temperature rising Mode) |
| Oven temperature | Hold 3 min at 40°C → increase 10°C/min |