Table 2. Analysis conditions of TD-GC-MS

TD-GC-MS
Thermal desorption (APK720R)
Valve oven temperature	150°C
Transfer line temperature	180°C
Concentration
1st desorption temperature	300°C
Focusing temperature	−20°C
Focusing time	10 min
Desorption
Temperature	300°C
Desorption time	3 min
GC-MS (Agilent7820A-5977E MSD)
Inlet
Temperature	250°C
Flow rate	1 mL/min
Oven temperature	35°C (20 min)5°C/min to 50°C (10 min)5°C/min to 100°C (10 min)5°C/min to 130°C (10 min)5°C/min to 185°C (0 min)(Total 80 min)
MS
Aux-1 temperature	300°C
MS source	230°C
MS quad	150°C

TD, thermal desorption; GC, gas chromatography; MS, mass spectrometry.