Table 1. GC-FID Operation Conditions.

entry	parameters	values
1	injector temperature	300 °C
2	injection volume	1 μL
3	split ratio	10
4	column temperature program
	initial temperature	50 °C hold 1 min
	rate 1 15 °C/min	180 °C
	rate 2 7 °C/min	230 °C
	rate 3 30 °C/min	300 °C hold 10 min
5	flow rate	3 mL/min
6	FID temperature	380 °C
7	carrier gas	nitrogen