食品科学 ›› 2012, Vol. 33 ›› Issue (18): 243-245.

• 分析检测 • 上一篇    下一篇

毛细管气相色谱分析白酒中醇类与酯类

霍权恭   

  1. 河南工业大学粮油食品学院
  • 收稿日期:2011-08-28 修回日期:2012-08-02 出版日期:2012-09-25 发布日期:2012-09-07
  • 通讯作者: 霍权恭 E-mail:huo_qg@126.com

Analysis of Alcohols and Esters in Chinese Liquor by Capillary Gas Chromatography

  • Received:2011-08-28 Revised:2012-08-02 Online:2012-09-25 Published:2012-09-07

摘要: 使用SPB-1701中等极性毛细管柱(30m×0.25mm,0.25μm),通过对白酒中醇类、酯类色谱分离条件优化,建立白酒气相色谱分析方法。在最佳条件下,白酒中24种成分被有效分离。质量与安全监控的重要成分甲醇、正丙醇、异丁醇、异戊醇、乙酸乙酯和己酸乙酯,其检测限为0.4~1.8μg/mL、精密度为0.04%~3.19%(n=6)、回收率为93.74%~101.61%。SPB-1701色谱柱耐高温、耐氧化性、分离效能高,比极性毛细管柱更实用。

关键词: 白酒, 醇类, 酯类, 毛细管柱, 气相色谱

Abstract: A GC method was established to determine alcohols and esters in Chinese liquor by chromatographic separation on a medium polarity capillary column (SPB-1701, 30 m × 0.25 mm, 0.25 μm). Under optimized conditions, 24 compounds from Chinese liquor including alcohols and esters could be effectively separated. The limits of detection of the GC method for methanol, n-propanol, isobutanol, isopentanol, ethyl acetate and ethyl caproate as important ingredients for the control of safety and quality of Chinese liquor varied from 0.4 to 1.8μg/mL, the precision (relative standard deviation, RSD) for 6 replicate determinations were 0.04%-3.19%, and the average spike recovery rates were in the range of 93.74%-101.61%. This study demonstrated that SPB-1701 column has good tolerance to high temperatures and oxidation and high separation ability and is therefore more practical than polar capillary column.

Key words: Chinese liquor, alcohols, esters, capillary column, gas chromatography

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