气相色谱法同时测定白酒中10种醇、酯类物质  

Simultaneously Determination of Ten Kinds of Alcohols and Esters in White Spirit by Gas Chromatography

作　　者：孙长华[1] 

机构地区：[1]黑龙江省质量监督检测研究院,黑龙江省哈尔滨150028

出　　处：《酿酒》2017年第3期49-52,共4页Liquor Making

摘　　要：采用气相色谱法同时对白酒中甲醇、正丙醇、乙酸乙酯、异丁醇、正丁醇、异戊醇、正戊醇、丁酸乙酯、乳酸乙酯、己酸乙酯的含量进行定性定量测定;选用白酒专用色谱柱CP-Wax57 CB(50 m×0.25 mm×0.2μm),氢火焰离子化检测器(FID)检测,以乙酸正戊酯为内标定量;该方法下10种醇、酯类物质线性关系良好,检出限小于国家标准要求,相对标准偏差(RSD)范围为1.4%~2.15%,有良好的重现性,回收率在90.00%~103.5%之间,方法简单,快捷,灵敏度高,重现性好,可满足白酒中醇类和酯类的分析测定要求。In this research, the content of methanol, n -propanol alcohol , acetic ether, isobutanol, n - buty alcohol, isoamylol, n-amyl alcohol, ethyl butyrate, ethyl lactate and ethyl caproate were qualitative and quantitative determinated by Gas Chromatography simultaneously as following method. Spirits special capillary column CP-Wax57 CB（50m × 0.25mm × 0.2 μ m） and hydrogen flame ionization detector （FID） were used in the determination and n-amyl acetate was used as internal standard. The results showed that there were good linear relations for these 10 kinds of alcohols and esters. The detection limit was less than requirement of national standard. The relative standard deviation of this method was between 1.4%-2.15% with good reproducibility and the standard addition recoveries were in the range of 90.0%-103.5%. This method could meet the demand of alcohols and esters＇ analysis and determination in the white spirit as its convenience, high sensibility and good reproducibility.

关 键 词：气相色谱 白酒 内标法 毛细管柱 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS207.3[轻工技术与工程—食品科学与工程]