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Heterogeneity Evaluation of Research Materials for Microanalysis Standards Certification

Published online by Cambridge University Press:  01 August 2004

Ryna Marinenko  and
Stefan Leigh
Ryna Marinenko
Affiliation:
Surface and Microanalysis Science Division, Mail Stop 8371, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899, USA
Stefan Leigh
Affiliation:
Statistical Engineering Division, Mail Stop 8980, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899, USA
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Abstract

Electron microprobe testing and evaluation procedures to determine the extent of within- and between-specimen heterogeneity of reference materials and the experimental uncertainty are described. These procedures have been developed and used at NIST in the certification of several NIST Standard Reference Materials (SRMs). In this article, they have been simplified and updated for general use. Suggestions for experimental testing of specimens are described and a detailed description of the statistical evaluation process is included with an example of a data spreadsheet and instructions for its preparation.

Keywords

analysis of variancecertification of microanalysis standardselectron probe microanalysisheterogeneityhomogeneitymicroanalysis standardsmicroheterogeneitymicrohomogeneitystandard reference materialsuncertainty
Type
Microanalysis
Information
Microscopy and Microanalysis , Volume 10 , Issue 4 , August 2004 , pp. 491 - 506
Copyright
© 2004 Microscopy Society of America

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References

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