Uncertainty Evaluation of Measurement Results for the Determination of Selenium in Shiitake by Hydride-Atomic Fluorescence Spectrometry

Abstract:

The content of selenium in Shiitake was determined by hydride-atomic fluorescence spectrometry and the sources of uncertainty were evaluated. Each parameter in mathematic model was analyzed to evaluate the type A and type B uncertainties in the method. To obtain the uncertainty evaluation , each uncertainty component was synthesized and extended by the current international method . The evaluation results showed that the major source of the uncertainty in the method was the sample solution volume and the standard curve.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 1166-1172
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.1166
• Online since: September 2013
• Authors: Li Wei Chu, Shu Li Wang, Yan Zhong
• Keywords: Evaluation, Hydride-Atomic Fluorescence Spectrometry, Selenium, Uncertainty

References

[1] Ziegler E E, Filer L J. Jr. Present knowledge in utrition. Washington, D.C.: International Life Science Institute, 1996, 310.

[2] Luo Haiji, Ji Yanhong. The biological effect of selenium and significance. Trace elements and health research，2000，17(2)：70-71.

[3] Standing committee on the scientific evaluation of dietary reference intakes of the food and nutrition borad, institte of medicine. The national academics with health Canada. Dietary reference in takes for vitamin C, vitamin E, selenium, and carotenoeds. Washington D.C.: national academy press, (2000).

DOI: 10.17226/9810

[4] Margaret P. The importance of selenium to human health(review). The Lancet, 2000, 356: 233-41.

[5] Huang Shi. The biology research progress of food selenium source. Food science，2001，5（22）：90~93.

[6] National Quality and Technique Superintend Station. Evaluation and Expresion of Uncertainly in Measurement, (JJF 1059-1999). Beijing: Standards Press of China，(2004).

[7] Yang Lili，Zhang Deqiang，Gao Ying. The determination of selenium in Chinese herbal medicine by Hydride - atomic fluorescence spectrometry. Spectroscopy and spectral analysis，2003，23(2)，368-370.

[8] National standards of the People's Republic of China. The proportion of the physical and chemical food hygiene inspection method . The determination of selenium in food[S]. GB/T 5009. 93-2003. Beijing: Standards Press of China, (2003).

[9] China National Accreditation board for laboratories. Guide to the evaluation of uncertainty in chemistry analysis. Beijing: China Metrology publishing house, (2002).

[10] JJG 196-1990. Metrology Verification Regulation of the People's Republic of China Working Glass Container. Beijing: China Metrology publishing house, (1990).

[11] Sha Dingguo, Error analysis and evalution the uncertainty of measurement. Beijing: China Metrology publishing house，2003，174-181.