Table 2.
Experimental parameters for TD/GC/FID and TD/GC/MS analysis.
| TD/GC/FID | TD/GC/MS | |
|---|---|---|
| TD | ||
| Desorption temperature | 280 °C | 250 °C |
| Temperature of cold trap | −14 °C | −20 °C |
| Injection temperature | 280 °C | 250 °C |
| Control mode | Pressure | Pressure |
| Carrier gas | Helium | Helium |
| Pressure | 100 kPa | 100 kPa |
| Split ratio | 1/20 | 1/20 |
| Temperature profile of column oven | 40 °C for 5 min, | 40 °C for 5 min, |
| 10 °C/min up to 300 °C, | 10 °C/min up to 300 °C, | |
| 300 °C for 15 min | 300 °C for 15 min | |
| GC | ||
| Column | DB-1 (Agilent J&W Corp.) | DB-1MS (Agilent J&W Corp.) |
| Film thickness | 0.25 μm | 0.25 μm |
| Length | 30 m | 60 m |
| Inner diameter | 0.32 mm | 0.32 mm |
| Detector | FID | MS |
| Detector temperature | 320 °C | |
| Makeup gas | Nitrogen | |
| Flow rate of makeup gas | 30 mL/min | |
| Flow rate of hydrogen gas | 40 mL/min | |
| Flow rate of air | 400 mL/min | |
| Temperature of ion source | 200 °C | |
| Detector gain | −0.10 kV | |