酿造酱油中苯甲酸测定的不确定度分析

Analysis of Uncertainty in the Determination of Benzoic Acid in Brewed Soy Sauce

本文对液相色谱法测定酿造酱油中苯甲酸含量的不确定进行分析,通过建立数学模型,分析结果的测量不确定度主要来源,确定各不确定度分量,综合评定苯甲酸含量的测量不确定度。分析结果表明,酿造酱油中苯甲酸的含量为0.532 g·kg^(-1),其扩展不确定度为0.080 g·kg^(-1)(k=2)。

This article analyzes the uncertainty in the determination of benzoic acid content in brewed soy sauce by liquid chromatography.By establishing a mathematical model,the main sources of measurement uncertainty in the analysis results are determined,and each uncertainty component is determined to comprehensively evaluate the measurement uncertainty of benzoic acid content.The analysis results indicate that the content of benzoic acid in brewed soy sauce is 0.532 g·kg^(-1),and its expanded uncertainty is 0.080 g·kg^(-1)(k=2).