毛细管色谱法测定白酒中的甲醇、乙酸乙酯、乳酸乙酯和正丙醇  

Determination of methanol, ethyl acetate, ethyl lactate and n-propanol in alcohol by capillary gas chromatography

作　　者：亓学奎[1] 王欣欣[1] 杨华[1] 

机构地区：[1]北京市理化分析测试中心,北京100089

出　　处：《食品科技》2014年第2期276-278,共3页Food Science and Technology

基　　金：国家自然科学基金项目(21207007)

摘　　要：乙酸乙酯、乳酸乙酯和杂醇油作为白酒中重要的呈香味物质,其含量的高低直接影响着白酒的风格。用HP-INNOWAX石英毛细管柱直接进样,氢火焰离子化检测器检测,外标法定量,建立了毛细管气相色谱同时测定白酒中的甲醇、正丙醇、乙酸乙酯和乳酸乙酯的分析方法,并对色谱条件进行了优化。方法的检出限在0.001～0.002 g/L之间,回收率为99.5%～105.8%,RSD在0.15%～1.95%之间。该方法简单快速,灵敏度高,适用于白酒中甲醇、正丙醇、乙酸乙酯和乳酸乙酯的同时分析测定。The ethyl acetate and the fusel oil are important taste material, the content of which has a direct influence on the taste of liquor. The sample was put into HP-INNOWAX of capillary column and analyzed with FID detector, they were quantified by external standard method. To establish a practical method for simultaneous determination of methanol, n-propanol, ethyl acetate and ethyl lactate in alcohol. Under the proposed conditions, the limit of detection were range 0.001～0.002 g/L, the sample recoveries within 99.5%～105.8%, the relative standard derivation within 0.15%～1.95%. The method is rapid, sensitive and suitable for determination of methanol, n-propanol, ethyl acetate and ethyl lactate in alcohol.

关 键 词：白酒 甲醇 乙酸乙酯 正丙醇 乳酸乙酯 毛细管气相色谱 

分 类 号：TS261.7[轻工技术与工程—发酵工程]