食品科学

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超高效液相色谱法测定婴幼儿配方乳粉中的VD3含量的不确定度评定

樊 垚,黄翠丽,王力清,任国谱,周桂萍,陈洪涛   

  1. 1.中南林业科技大学食品科学与工程学院,湖南 长沙 410004;2.广东产品质量监督检验研究院,广东 佛山 528300;
    3.大连理工大学生命科学与技术学院,辽宁 大连 116024
  • 出版日期:2013-06-25 发布日期:2013-06-17

Uncertainty Evaluation for the Determination of Cholecalciferol in Infant Formula Milk Powder by Ultra Performance Liquid Chromatography

FAN Yao,HUANG Cui-li,WANG Li-qing,REN Guo-pu,ZHOU Gui-ping,CHEN Hong-tao   

  1. 1. College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
    2. Guangdong Testing Institute for Product Quality Supervision, Foshan 528300, China;
    3. School of Life Science and Biotechnology, Dalian University of Technology, Dalian 116024, China
  • Online:2013-06-25 Published:2013-06-17

摘要:

根据JJF 1059—1999《测量不确定度评定与表示》的原理与方法,建立了超高效液相色谱法测定婴幼儿配方乳粉中VD3含量的测量不确定度评定的数学模型。对数学模型中各不确定度分量的来源进行分析、量化和合成。当取样量为10.0g,其测定的VD3含量为(7.45 ± 0.2091)μg/100g。最终结果的不确定度主要由标准溶液、标准曲线的建立及测量随机性因素的不确定度引起。整体评定方法清晰合理,简便准确,适合超高效液相色谱法、高效液相色谱法的不确定度评定。

关键词: 超高效液相色谱, 婴幼儿配方乳粉, VD3, 不确定度评定

Abstract:

Based on JJF 1059—1999 Evaluation of the Uncertainty of Determination and Expression, a mathematical model
was established to assess the uncertainty of analyzing cholecalciferol (VD3) in infant milk powder by ultra performance
liquid chromatography (UPLC). Factors contributing to the uncertainty were analyzed, quantified and synthesized. The
expanded uncertainty of VD3 determination for 10.0 g of samples was 0.2091 μg. Our results showed that the uncertainty
of measurement was mainly caused by the preparation of standard solution, the establishment of the standard curve and the
uncertainty of stochastic factors during the determination of samples. The evaluation method is reasonable, clear, simple,
accurate, and suitable for the evaluation of uncertainty in UPLC determination.

Key words: ultra-performance liquid chromatography, infant formula milk powder, cholecalciferol, uncertainty evaluation