Table 2.

Operative condition of TD-GC/MS analysis.

Step	Parameters	Value
Tube desorption	Purge time	3 min at 5 mL/min–trap in line
	Desorption time	10 min
	Desorption temperature	300 °C
	Temperature of cold trap	20 °C
	Desorption flow	30 mL/min, no split
Focusing trap desorption	Temperature of cold trap desorption	300 °C
	Split low	5 mL/min
	Transfer Line Temperature	200 °C
GC analysis	Gas carrier	He
	Gas flow	1.7 mL/min
	Analytical column	VOCOL® (Supelco), diphenyl dimethyl polysiloxane with crosslinking moieties, 60 m × 0.25 mm ID, 1.5 μm stationary phase thickness
	Oven temperature	37 °C hold for 5 min
		37–190 °C at 6 °C/min
		190–200 °C at 2 °C/min
		220–220 °C at 15 °C/min
		220 °C hold for 3 min