Uncertainty Evaluation for Determining Concentration of Benzioc Acid in Tea Drink by HPLC

Abstract

Abstract: This paper establishes mathematical model of uncertainty evaluation for determining the concentration of benzioc acid in tea drink by high performance liquid chromatography, adopting the method of layer modeling evaluation. The sources of uncertainty are analyzed to compose steps for whole determination procedure. The uncertainty of external calibration curve fitting is evaluated with the least square method. Uncertainty resulted from the less measurement times is evaluated by using the extreme deviation method. The evaluating method of uncertainty could be used as references for evaluating the uncertainty of determined results in high performance liquid chromatography and gas chromatography with external calibration curve.

Key words: HPLC, uncertainty, benzioc

CAI Qiu, ZHU Ming. Uncertainty Evaluation for Determining Concentration of Benzioc Acid in Tea Drink by HPLC[J]. FOOD SCIENCE, 2007, 28(2): 277-280.

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Uncertainty Evaluation for Determining Concentration of Benzioc Acid in Tea Drink by HPLC

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