Uncertainty evaluation in determination of Ca in Areca by atomic absorption spectrophotometer

Authors

KANG Zhijiao, Hunan Areca Processing and Edible Safety Engineering Technology Research Center, Xiangtan, Hunan 411100, China; Hunan Bingzhilang Food Science and Technology Co., Ltd., Xiangtan, Hunan 411100, China
ZHAO Zhiyou, Hunan Areca Processing and Edible Safety Engineering Technology Research Center, Xiangtan, Hunan 411100, China; Hunan Bingzhilang Food Science and Technology Co., Ltd., Xiangtan, Hunan 411100, China
YUAN He, Hunan Areca Processing and Edible Safety Engineering Technology Research Center, Xiangtan, Hunan 411100, China; Hunan Bingzhilang Food Science and Technology Co., Ltd., Xiangtan, Hunan 411100, China
LIU Jia, Hunan Areca Processing and Edible Safety Engineering Technology Research Center, Xiangtan, Hunan 411100, China; Hunan Bingzhilang Food Science and Technology Co., Ltd., Xiangtan, Hunan 411100, China
XIA Yanbin, College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China

Abstract

In order to improve the accuracy in measurement, the uncertainty of determination of Ca in Areca by atomic absorption spectrophotometer (AAS) was evaluated according to “JJF 1059.1—2012 Evaluation and Expression of Uncertainty in Measurement”. First, a mathematical model of determination of Ca in Areca was established at first. Then, the source of uncertainty was analyzed and the uncertainty components were quantified. Finally, the synthetic uncertainty and expanded uncertainty were calculated. The uncertainties of standard curve fitting and AAS had a greater influence on the expanded uncertainty. When the content of Ca in Areca was 3.16 mg/kg, the expanded uncertainty was 0.04 mg/kg (k=2, P=95%).

Publication Date

5-28-2019

First Page

107

Last Page

110

DOI

10.13652/j.issn.1003-5788.2019.05.019

Recommended Citation

Zhijiao, KANG; Zhiyou, ZHAO; He, YUAN; Jia, LIU; and Yanbin, XIA (2019) "Uncertainty evaluation in determination of Ca in Areca by atomic absorption spectrophotometer," Food and Machinery: Vol. 35: Iss. 5, Article 19.
DOI: 10.13652/j.issn.1003-5788.2019.05.019
Available at: https://www.ifoodmm.cn/journal/vol35/iss5/19

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