百合干中二氧化硫含量测定的不确定度分析  

Uncertainty Analysis of Sulfur Dioxide in Dried Edible Lily

作　　者：苗茜 张滢 刘笑笑 张新中 MIAO Qian;ZHANG Ying;LIU Xiaoxiao;ZHANG Xinzhong(Lanzhou Institute of Food and Drug Inspection and Testing,Lanzhou 730050,China)

机构地区：[1]兰州市食品药品检验检测研究院,甘肃兰州730050

出　　处：《食品安全导刊》2022年第26期62-65,共4页China Food Safety Magazine

基　　金：甘肃省青年科技基金计划(20JR10RA575);甘肃省药监青年科技创新项目(2020GSMPA013)。

摘　　要：本文对蒸馏法测定百合干中二氧化硫含量的不确定度进行评定。建立百合中二氧化硫含量测定的数学模型,分别对试验过程中各分量的不确定度进行计算和统计。结果表明,百合干中二氧化硫含量的扩展不确定度为0.026 g·kg^(-1);二氧化硫残留量为(1.01±0.026)g·kg^(-1)。测量结果的不确定度主要由碘标准溶液消耗体积引入和由样品测量重复性引入。The uncertainty of the determination of sulfur dioxide content in dried edible lily was evaluated by distillation method.The mathematical model for the determination of sulfur dioxide content in lily was established,and the uncertainty of each component in the experiment was calculated and counted.The results showed that the expanded uncertainty of sulfur dioxide content in dried edible lily was 0.026 g·kg^(-1),and the determination result of sulfur dioxide residue was(1.01±0.026)g·kg^(-1).The uncertainty of sulfur dioxide content in dried edible lily is mainly introduced by the consumption volume of the iodine standard solution and the repeatability of the sample measurement.

关 键 词：百合干 二氧化硫 滴定法 不确定度 

分 类 号：TS207.3[轻工技术与工程—食品科学]