| GC-MS | GCMS-QP2010Plus (Shimadzu, Kyoto, Japan) |
|---|---|
| Column | DB-5(60 mm×0.25 mm i.d., 0.25 μm film thickness) |
| Carrier gas | He (Flow rate: 1.0 mL/min) |
| Oven temp program | 40℃ (5 min)-2℃/min-280℃ (10 min) |
| Injector temp | 250℃ |
| Dectector temp | 300℃ |
| Ionization voltage | 70 eV |
| Injector volume | 1 μL |
| Split ratio | 1:20 |