国产与进口气相色谱仪在白酒分析中的比较研究  

Comparison of Domestic and Imported Gas Chromatographs in the Analysis of Baijiu

作　　者：樊成 魏宁果 范芳芳 FAN Cheng;WEI Ningguo;FAN Fangfang(Shaanxi Institute of Product Quality Supervision&Inspection,Xi’an,Shaanxi 710048,China)

机构地区：[1]陕西省产品质量监督检验研究院,陕西西安710048

出　　处：《酿酒科技》2024年第2期110-115,共6页Liquor-Making Science & Technology

摘　　要：采用GC-FID建立了以叔戊醇、乙酸正戊酯、2-乙基丁酸为内标,同时测定白酒中11种物质的检测方法。比较了国产与进口气相色谱仪的计量检测性能,并采用该方法对不同香型的白酒进行测定。结果表明该方法线性关系良好(相关系数R^(2)>0.999),检出限<10 mg/L,回收率在95.8%~105.0%之间,相对标准偏差(RSD)<1.17%(n=6),该方法操作简便、准确性好、精密度高,适用于白酒中甲醇和风味物质的同时测定。国产气相色谱仪的灵敏度、精密度、准确度等性能,与进口设备差异不大,能够满足企事业单位的检验检测要求,快速高效响应客户需求和使用成本方面优于进口设备,工作站操作便携性方面有待提升。A method for the simultaneous determination of 11 substances in Baijiu was established by using GC-FID with tert-amyl alcohol,n-pentyl acetate and 2-ethylbutyric acid as the internal standards.The measurement and detection performance of domestic and imported gas chromatographs was compared,and the method was used to determine different flavor types of Baijiu.The results showed that the method had good linear relationship(R2>0.999),the detection limits were less than 10 mg/L,the recovery rates were between 95.8%and 105.0%,and the relative standard deviation(RSD)was less than 1.17%(n=6).The method was easy to operate,had good accuracy and high precision,and was suitable for the simultaneous determination of methanol and flavor substances in Baijiu.The sensitivity,precision,accuracy and other performance of the domestic gas chromatograph are not obviously different from that of the imported equipment,and can meet the inspection and testing requirements of distilleries and institutes.The after-sales service and cost of the domestic gas chromatograph are superior to that of the imported equipment,while its operability and portability need to be improved.

关 键 词：气相色谱 白酒 甲醇 风味物质 国产 进口 

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]