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《Food Research and Development》 2014-09
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Uncertainty Evaluation for Pantothenic Acid Determination in Infant Formula

ZHANG Yan;HUO Sheng-nan;HU Ming-yan;DONG Rui;MENG Jing;ZHU Jian-hua;Shandong Inspection Institute for Product Quality;  
As the arbitration method,the uncertainty evaluation for determinating pantothenic acid in infant formula by microbial method is related to the qualified judgement of sample. According to the standards JJF1059.1-2012 and CNAS-CL07:2011,the sources of uncertainty for this method were explored. The evaluation involves method repeatability, standard solution preparation,weighing of sample,sample pre-treatment and dilution. The standard uncertainty and expanded uncertainty were given by analysis. The content of pantothenic acid in infant formula by microbial method was(1 990.1±121.0)μg/100 g,k=2,p=95%. Sample pre-treatment and dilution is the key source of the determination. Standard solution preparation and method repeatability are secondlly important.
【Fund】: 山东省优秀中青年科学家科研奖励基金(BS2010SW024)
【CateGory Index】: TS252.7
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