荧光分光光度法测定乳粉中维生素C含量的不确定度评定  

Uncertainty Assessment of Vitamin C Content in Milk Powder by Fluorescence Spectrophotometry

作　　者：王竹青 唐钰娜 汤陈龙 陈晓雅 周雨蝶 王森燚 巩启强 叶磊海 

机构地区：[1]浙江公正检验中心有限公司,浙江 杭州

出　　处：《食品与营养科学》2024年第2期177-183,共7页Hans Journal of Food and Nutrition Science

摘　　要：为了提高实验室检测数据的准确性,本文依据GB5413.18-2010《婴幼儿和乳品中维生素C的测定》方法,分析乳品中维生素C测定过程中的不确定度来源,建立了不确定度评估数学模型,评定出各不确定度分量。结果表明,当乳粉样品中维生素C的含量为52.0 mg/100g,扩展不确定度为3.0 mg/100mg,重复性测量和校准曲线的拟合是不确定度的主要来源。In order to improve the accuracy of laboratory test results, this article analyzed the sources of uncertainty in the determination of vitamin C in dairy products based on the GB5413.18-20210 method “Determination of Vitamin C in Infants and Dairy Products”, established a mathematical model for uncertainty evaluation, and evaluated each uncertainty component. The results indicated that when the content of vitamin C in milk powder samples was 52.0 mg/100g, the extended uncertainty was 3.0 mg/100mg. and the fit of repeatability measurement and calibration curve was the main source of uncertainty.

关 键 词：乳粉 维生素C 不确定度 

分 类 号：TS2[轻工技术与工程—食品科学与工程]