Detector and injector temperature were set at 230 C.
The temperature program for FFAP column was 120 C (1 min) to 230 C at a rate of 6 C/min and then holding at 230 C for 35 min.
Helium was used as a carrier gas at a flow rate of 14 psi (split 1:10 mL/min) and injection volume of each sample was 1 ml.
The ionization energy was set at 70 eV.