PREPARATION AND CERTIFICATION OF LOW ALLOY STEEL REFERENCE MATERIALS FOR SPECTROMETRIC ANALYSIS |
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| Adel B. Shehata, Essam A. Kishar, Randa N. Yamani |
- Abstract:
- Matrix certified reference materials are versatile tools to support quality, correctness and credibility of measurement results. CRMs are used to provide the traceability of the measurement results to the SI unit. Seven low alloy steel certified reference materials were developed by the national institute of standards (NIS), Egypt. Homogeneity and stability were studied by x-ray fluorescence spectrometer. The characterization of RMs was performed using independent chemical methods as gravimetric methods, x-ray fluorescence spectrometry, optical emission spectrometer and atomic absorption spectrometer. Both the assigned values and their associated uncertainty were calculated by weighted mean approach after the statistical analysis of measurements results for the homogeneity of variances, equality of means, normality of data and outliers.
- Keywords:
- low alloy steel, homogeneity, reference materials, traceability
- Download:
- IMEKO-WC-2015-TC24-461.pdf
- DOI:
- -
- Event details
- Event name:
- XXI IMEKO World Congress
- Title:
Measurement in Research and Industry
- Place:
- Prague, CZECH REPUBLIC
- Time:
- 30 August 2015 - 04 September 2015