食品科学 ›› 2009, Vol. 30 ›› Issue (12): 205-208.doi: 10.7506/spkx1002-6630-200912045

• 分析检测 • 上一篇    下一篇

高效液相色谱法测定小麦粉与大米粉中甲醛次硫酸氢钠含量的不确定度评定

汪 辉,曹小彦* ,彭新凯,胡朝晖,黄江南,何红梅   

  1. 长沙市食品质量安全监督检测中心
  • 收稿日期:2008-09-04 修回日期:2008-11-22 出版日期:2009-06-15 发布日期:2010-12-29
  • 通讯作者: 曹小彦 E-mail:wanghuei158@163.com

Uncertainty Evaluation of High Performance Liquid Chromatographic Determination of Sodium Formaldehyde Sulfoxylate (Rongalite) in Wheat Powder and Rice Powder

WANG Hui,CAO Xiao-yan*,PENG Xin-kai,HU Zhao-hui,HUANG Jiang-nan,HE Hong-mei   

  1. (Changsha Center of Supervision and Inspection on Food Quality Safety, Changsha 410013, China)
  • Received:2008-09-04 Revised:2008-11-22 Online:2009-06-15 Published:2010-12-29
  • Contact: CAO Xiao-yan*, E-mail:wanghuei158@163.com

摘要:

目的:对高效液相色谱法测定小麦粉与大米粉中甲醛次硫酸氢钠的含量进行不确定度评定,为建立有效的质量控制方法提供参考。方法:根据《化学分析中不确定度的评估指南》提供的不确定度分析思路,分析影响测量不确定度的各个因素,对测量结果的不确定度进行评定和表述。结果:本实验的不确定度为0.41μg/g。结论:最终结果的不确定度主要由标准储备溶液浓度的不确定度和样品处理过程产生的不确定度所引起。

关键词: 高效液相色谱, 小麦粉, 大米粉, 甲醛次硫酸氢钠, 不确定度

Abstract:

A mathematical model for uncertainty evaluation and analysis of factors affected by measuring uncertainty was established according to the principles for determining of rongalite in wheat powder and rice powder by HPLC and methods for uncertainty evaluation provided by Guide to Uncertainty Evaluation in Chemistry Analysis. Uncertainty of measuring result was evaluated and described. The uncertainty of this experiment was 0.41 μg/g. The results suggest that the uncertainty of this experiment is mainly caused in process of sample treatment and associated with concentration of standard stock solution.

Key words: HPLC, wheat powder, rice powder, rongalite, uncertainty

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