The Method for Direct Gas Chromatographic Determination of Acetaldehyde, Methanol, and Other Volatiles Using Ethanol as a Reference Substance: Application for a Wide Range of Alcoholic Beverages

The article presents the results of collaborative study method for gas chromatographic determination alcoholic fermentation volatile by-products (acetaldehyde, methanol, methyl acetate, ethyl propan-2-ol, propan-1-ol, 2-methylpropan-1-ol, butan-1-ol, and 3-methylbutan-1-ol) in beverages with volume ethanol content a range 9.9–96.0% (wine, sake, liquor, tequila, vodka, grappa, bourbon, scotch, calvados, rakia, rum, brandy, whiskey, gin, rectified alcohol). zest is use ethanol, present beverages, as reference substance quantitative mentioned components. Checking precision data, obtained under repeatability conditions both intermediate conditions, trueness test results, was carried out according to ISO 5725–6. relative difference between calibration coefficients (relative response factors analyzed compound ethanol), an interval 3 weeks, did not exceed 1.1%. Contents acetaldehyde, volatiles 15 commercial by developed varied 1.84–677 mg L?1 absolute 3.25–12,394 1.49–4243 intervals, correspondingly.