Estimation of measurement uncertainty in the EDXRF spectrometry of stainless steel

The uncertainty in the analysis of nine elements in stainless steels performed with the NITON spectrometer was estimated. Initially, an Ishikawa diagram was used to describe the main sources of uncertainty. After calculating the standard uncertainties of these sources, they were combined to determin...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-03, Vol.1826 (1), p.12011
Main Authors: Krummenauer, A, Dias, P R, Veit, H M
Format: Article
Language:English
Subjects:
Physics
Stainless steels
Uncertainty
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Summary:The uncertainty in the analysis of nine elements in stainless steels performed with the NITON spectrometer was estimated. Initially, an Ishikawa diagram was used to describe the main sources of uncertainty. After calculating the standard uncertainties of these sources, they were combined to determine the combined standard uncertainty and the expanded uncertainty for each element. An uncertainty contribution graph was developed to assist in analyzing the influences of uncertainty sources on the final value of combined standard uncertainty. A simple uncertainty can be attributed to each element and the calibration curve is a very significant uncertainty source.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1826/1/012011