Determination of the content of methanol and ethanol
in beverages was conducted by direct injection GC
method coupling with dual internal standards. Practically,
1 mL of sample was mixed with 100 lg 2-pentanol
in 0.1 mL and 50 mg acetonitrile in 1 mL, then 0.1 lL
mixture was subjected to GC analysis. The contents of
alcohol were calculated according to below equations.