Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis
Shehata, A., Kishar, E., Ahmed, D., Yamani, R. (2015). Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis. EKB Journal Management System, 32(part 1), 254-269. doi: 10.21608/jsrs.2015.18810
Adel B. Shehata; Essam Kishar; Doaa A. Ahmed; Randa N. Yamani. "Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis". EKB Journal Management System, 32, part 1, 2015, 254-269. doi: 10.21608/jsrs.2015.18810
Shehata, A., Kishar, E., Ahmed, D., Yamani, R. (2015). 'Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis', EKB Journal Management System, 32(part 1), pp. 254-269. doi: 10.21608/jsrs.2015.18810
Shehata, A., Kishar, E., Ahmed, D., Yamani, R. Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis. EKB Journal Management System, 2015; 32(part 1): 254-269. doi: 10.21608/jsrs.2015.18810

Preparation and Certification of Low Alloy Steel Reference Materials for Spectrometric Analysis

Journal of Scientific Research in Science
Article 15, Volume 32, part 1, December 2015, Page 254-269  XML PDF (12.6 MB)
Document Type: Original Article
DOI: 10.21608/jsrs.2015.18810
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Authors
Adel B. Shehata email 1; Essam Kishar2; Doaa A. Ahmed3; Randa N. Yamani1
1National Institute of Standards, Giza, Egypt
2Faculty of Women ,Ain shams university
3Chemistry Department, Women’s College for Arts, Science and Education, Ain Shams University, Cairo,
Abstract
Matrix certified reference materials (CRMs) 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 is studied using x-ray fluorescence spectrometer (XRF) and optical emission spectrometer (OES). The characterization of RMs was performed using independent chemical methods as gravimetric methods, x-ray fluorescence spectrometry, optical emission spectrometry and atomic absorption spectrometry.  Both the assigned values and their associated uncertainty were calculated by weighted mean approach after the statistical analysis of the results of measurements for the homogeneity of variances, equality of means, normality of data and outliers.
 
Keywords
Low alloy steel; Homogeneity; Reference materials; Traceability
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