气相色谱测定浓香型白酒中己酸含量的不确定度评定  

Evaluation of Uncertainty in Determination of Hexanoic Acid Content in Nongxiangxing Baijiu by Gas Chromatography

作　　者：黎川 芦珊珊 刘杨 LI Chuan;LU Shanshan;LIU Yang(Bortala Mongol Autonomous Prefecture Institute for Food and Drug Control,Bole 833400,China)

机构地区：[1]新疆博尔塔拉蒙古自治州食品药品检验所,新疆博乐833400

出　　处：《食品安全导刊》2023年第25期51-54,共4页China Food Safety Magazine

摘　　要：按照《白酒质量要求第1部分:浓香型白酒》(GB/T 10781.1—2021),采用气相色谱法对浓香型白酒的己酸含量进行检测。根据《测量不确定度评定与表示》(JJF 1059.1—2012),建立数学模型,分析整个实验过程的不确定度来源,并针对各个不确定度来源进行计算。结果表明,白酒中己酸含量为0.0470 g·L^(-1),其扩展不确定度为0.0020 g·L^(-1)(k=2)。气相色谱仪的性能以及标准溶液的配制是影响该方法不确定度产生的主要因素。According to GB/T 10781.1—2021,the content of hexanoic acid in Nongxiangxing Baijiu is detected by gas chromatography.According to JJF 1059.1—2012,establish a mathematical model,analyze the sources of uncertainty throughout the experimental process,and calculate for each source of uncertainty.The results showed that the content of hexanoic acid in Nongxiangxing Baijiu was 0.0470 g·L^(-1),and the expanded uncertainty was 0.0020 g·L^(-1)(k=2).The performance of gas chromatograph and the preparation of standard solution are the main factors affecting the uncertainty of the method.

关 键 词：气相色谱法 浓香型白酒 己酸 不确定度评定 

分 类 号：TS262.31[轻工技术与工程—发酵工程] O657.71[轻工技术与工程—食品科学与工程]