气相色谱同时测定白酒中18种风味物质与甲醇的方法研究  

Simultaneous Determination of 18 Flavor Substances and Methanol in Baijiu by Gas Chromatography

作　　者：徐海燕 谢德文 XU Haiyan;XIE Dewen(Dongjiu Co.Ltd.,Zunyi,Guizhou 563000,China)

机构地区：[1]贵州董酒股份有限公司,贵州遵义563000

出　　处：《酿酒科技》2025年第5期113-116,共4页Liquor-Making Science & Technology

摘　　要：本研究建立了使用气相色谱仪测定白酒中微量成分的分析方法。CP-Wax57CB色谱柱(50 m×0.25 mm×0.20μm),载气为高纯氮气,流速0.75 mL/min,进样量1μL,分流比120∶1,进样口温度250℃,检测器温度250℃;标准品比对进行定性,五点内标标准曲线定量。本方法具有良好的线性关系,相关系数均大于0.999,精密度试验结果的相对标准偏差(RSD)为0.15%~1.93%,加标回收率为81.10%~107.95%,方法精密度及准确度均满足白酒中风味物质检测的要求,可为白酒风味物质和甲醇含量检测提供参考。A method for the determination of trace components in Baijiu by GC was developed.The analytical conditions were as follows:the FID analysis column was Agilent CP-Wax57CB(50 m×0.25 mm×0.20μm),the carrier gas was high purity nitrogen,the flow rate was 0.75 mL/min,the sample amount was 1μL,the split ratio was 120∶1,and the sample inlet temperature and detector temperature was 250℃.Qualitative identification was carried out by comparing the retention time of the sample with that of the standard substance,and quantification was performed by using the five-point internal standard calibration curve.The method exhibited excellent linearity(R>0.999),the precision RSD was between 0.15%and 1.93%,and the spiked recovery rate was between 81.10%and 107.95%.The precision and accuracy of the method meet the detection requirements of flavor sub-stances in Baijiu,and can provide reference for the determination of flavor substances and methanol content in Baijiu.

关 键 词：气相色谱 风味物质 白酒 方法学研究 

分 类 号：TS262.3[轻工技术与工程—发酵工程] TS261.7[轻工技术与工程—食品科学与工程]