摘要
建立高效液相色谱法测定婴幼儿乳粉中烟酰胺不确定度的数学模型,并根据JJF 1135—2005《化学分析测量不确定度评定》和JJF 1059—1999《测量不确定度评定与表示》中的有关规定,逐层对乳粉中烟酰胺测量不确定度来源进行评估,最后给出合成标准不确定度和扩展不确定度;婴幼儿乳粉中烟酰胺测定结果为(63.01±3.50)mg/kg,k=2,p=95%。通过评定,提出影响检测结果的主要因素为样品前处理过程、标准溶液、标准曲线拟合等。
A mathematical model was established to evaluate the uncertainty of determining nicotinamide in infant formula milk powder by high performance liquid chromatography with diode-array detection.According to the relevant regulations given in JJF 1135-2005 Evaluation of Uncertainty in Chemical Analysis Measurement and JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement,the sources of uncertainty for determining nicotinamide in infant formula milk powder were explored.Finally,the standard uncertainty and the expanded uncertainty were achieved.The content of nicotinamide in infant formula milk powder determined by HPLC was（63.01 ± 3.50） mg/kg.The major sources of uncertainty affecting determination results were pre-treatment,standard solution and standard curve fitting.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第16期330-333,共4页
Food Science
关键词
不确定度
烟酰胺
婴幼儿乳粉
高效液相色谱法
uncertainty
nicotinamide
infant formula milk powder
high performance liquid chromatography（HPLC）
作者简介
霍艳敏（1981-），女，工程师，硕士，研究方向为食品检测。E-mail：huoyanmin0628@163.com
