| Item | Condition |
|---|---|
| Instrument | 6890N (Agilent Technologies, Santa Clara, CA, USA) |
| Column | WCOT fused silica capillary column (100 m × 0.25 mm i.d., 0.20 µm film thickness, Varian, Lake Forest, CA, USA) |
| Injector temperature | 250 °C |
| Injection volume | 1 µL |
| Split ratio | 100:1 |
| Carrier | Helium at 1.0 mL/min constant flow |
| Oven temperature | 150°C (1 min) → 200°C (7°C/min) → 250°C (5°C/min) → hold for 10 min |
| Detector temperature | FID, 275°C |