Evaluation of Uncertainty in Determination of Sorbic Acid in Cake by High Performance Liquid Chromatography
In this paper,the content of sorbate in cake is determined by high performance liquid chromatography,the mathematical model of uncertainty evaluation is established,and the uncertainty of each influencing factor is analyzed according to the evaluation procedure of measurement uncertainty.The results show that the content of sorbate in cake is 0.404 g·kg-1,and its extended uncertainty is 0.116 g·kg-1(95%confidence level,k=2).
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