2009•Food ScienceRequires access

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

Hui Wang, Xiaoyan Cao, Peng Xin-kai, Zhaohui Hu, Jiangnan Huang, Hongmei He

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.

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Key concepts: Standard uncertainty, Measurement uncertainty, Uncertainty analysis, Formaldehyde, Stock solution, Chromatography, Process engineering, High-performance liquid chromatography