Quantifying Uncertainty of Vitamin C Determination in Infant Formula by Indophenol Titration Method
2005
Jun, J.Y. (Namyang Dairy Products Corporation, Gongju, Republic of Korea) | Kwak, B.M. (Namyang Dairy Products Corporation, Gongju, Republic of Korea), E-mail: [email protected] | Ahn, J.H. (Namyang Dairy Products Corporation, Gongju, Republic of Korea) | Kong, U.Y. (Namyang Dairy Products Corporation, Gongju, Republic of Korea)
Uncertainty involved during determination of vitamin C content in infant formula was quantified by indophenol titration method. Uncertainty sources in measurand, such as purity, weight, final volume of standard, volume of standard solution used for titration, sample weight, final volume of sample, extraction solution used for titration, titration of extraction solution and standard solution by indophenol solution were identified and used as parameters for combined standard uncertainty based on Guide to the expression of uncertainty in measurement (GUM) and Draft EURACHEM/CITAC Guide.
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