Table 1.

Method used in Tracer GC Ultra for two columns when TD was connected

Method description	Carbograph PLOT	Al2O3-PLOT-S
Initial temperature	35 °C	100 °C
Initial time	5 min	0.5 min
Ramp rate 1	20 °C min−1	30 °C min−1
Final temperature 1	50 °C	130 °C
Hold time 1	10 min	6.5 min
Ramp rate 2	2.5 °C min−1	30 °C min−1
Final temperature 2	65 °C	140 °C
Hold time 2	1 min	23 min
Ramp rate 3	20 °C min−1	20 °C min−1
Final temperature 3	200 °C	190 °C
Hold time 3	4 min	5 min
Carrier gas flow rate	1.5 mL min−1	1 mL min−1