New Method for Quantitative Determination of Volatile Compounds in   Spirit Drinks by Gas Chromatography. Ethanol as Internal Standard
  The new methodical approach of using ethanol as internal standard in gas chromatographic analysis of volatile compounds in spirit drinks in daily practice of testing laboratories is proposed. This method provides determination of volatile compounds concentrations in spirit drinks directly expressed in milligrams per liter (mg/L) of absolute alcohol according to official methods without measuring of alcohol strength of analyzed sample. The experimental demonstration of this method for determination of volatile compounds in spirit drinks by gas chromatography is described. 
Siarhei V. Charapitsa, Anton N. Kavalenka, Nikita V. Kulevich, Nicolai   M. Makoed, Arkadzi L. Mazanik, Svetlana N. Sytova
physics.chem-ph