Determination of methanol, ethyl acetate and higher alcohols content in Jujube Brandy by capillary GC

A new method for the determination of methanol, ethyl acetate and higher alcohols in Jujube Brandy by capillary GC was established. The process increased temperature and retention time were studied to choose the best operation conditions and determine the content of methanol, ethyl acetate and higher alcohols in Jujube Brandy. The results showed that the precision was more than 97%, the accuracy was between-1.30%~2.91%, the minimum detection limit was between 0.0029 ~0.0097g/100 m L, and the recovery ration was between 97.22%~101.44%. The content of methanol, ethyl acetate and higher alcohols in Jujube Brandy were0.051~0.111g/100 m L (alcohol percent) , 0.007 ~0.096g/100 m L, and 0.042 ~0.153g/100 m L, respectively. The results showed that the content of methanol and higher alcohols were within the limit. The method for the determination of methanol, ethyl acetate and higher alcohols by capillary GC was simple, rapid, sensitive, and accurate.