摘要
建立了一种测定炒货中纽甜含量的不确定度数学模型,分析了整个检测过程中各种不确定度影响因子并进行评定,确定有关分量并合成不确定度。结果表明,当样品中纽甜含量为7.69 mg/kg时,其扩展不确定度为0.71mg/kg(k=2),其中标准储备溶液的配制和测量重复性引入的不确定度影响较大。
To analyse and evaluate the uncertainty in the determination of neotame content in roasted seeds and nuts by UPLCMS/MS.A mathematical model of uncertainty in the determination of neotame content in roasted seeds and nuts was established,various factors of uncertainty in the whole determination process were studied and evaluated,the components of uncertainty in the method were confirmed and composed.The results showed that the expanded uncertainty was 0.71 mg/kg(k=2)when the neotame content was 7.69 mg/kg,which was greater caused by preparation of standard stock solution and repeatability of determination.
作者
黄坤
王会霞
范小龙
郭嘉
HUANG Kun;WANG Hui-xia;FAN Xiao-long;GUO Jia(Hubei Provincial Institute for Food Supervision and Test, Wuhan, Hubei 430075, China;Hubei Provincial Engineering and Technology Research Center for Food Quality and Safety Test, Wuhan, Hubei 430075, China;Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan, Hubei 430205, China)
出处
《食品与机械》
北大核心
2019年第8期64-68,72,共6页
Food and Machinery
基金
国家自然科学基金青年基金(编号:21503152)
国家重点研发计划重点专项(编号:2018YFC1604000)
