Table 1.
Py-GC/MS conditions for samples analysis

Pyrolyzer
Pyrolyzer		Frontier Lab Double-Shot Pyrolyzer PY 2020iD
Pyrolysis temp. single shot		500°C
Gas chromatograph
GC	Agilent Technologies (Agilent Tech, USA) 6890N GC system
	Column	Agilent J&W GC column DB-5 ms (30 m × 0.25 mm × 0.25 μm)
	Inlet temp	300°C
	Split	100 : 1
	Gas flow	1 mℓ/min
	Oven temp.	40°C (2 min) ---- 20°C/min --- 320°C (14 min)
	Transfer line temp.	300°C
	Sample	0.5 mg
Mass spectrometer
MS	LECO Pegasus IV (LECO, MI, USA) Time of flight mass spectrometry
	Ionization	Electron impact (EI)
	Solvent delay	5 sec
	Mass range	30-601
	Detector voltage	1750 V
	Ion source temp.	220°C