Helium was used as a carrier gas at the flow rate of 1 mL/min. The column temperature was programmed from 40 to 220 C at 3 C/min. Temperatures for GC injector and GC-MSD interface were 250 C and 265 C, respectively. A split ratio of 50 to 1 was used
Helium was used as a carrier gas at the flow rate of 1 mL/min. The column temperature was programmed from 40 to 220 C at 3 C/min. Temperatures for GC injector and GC-MSD interface were 250 C and 265 C, respectively. A split ratio of 50 to 1 was used