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Sampling and Standards in a Recycled World

Published online by Cambridge University Press:  06 March 2019

H. E. Marr III ,
W. J. Campbell  and
D. L. Neylan
H. E. Marr III
Affiliation:
U. S. Bureau of Mines, College Park, Maryland 20740
W. J. Campbell
Affiliation:
U. S. Bureau of Mines, College Park, Maryland 20740
D. L. Neylan
Affiliation:
U. S. Bureau of Mines, College Park, Maryland 20740
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Abstract

A number of procedures for fluorescent X-ray analysis have been introduced to accommodate the samples that are produced from research on the recovery of values from secondary metal sources. For some applications, standards are conveniently available such as those that can be purchased from the National Bureau of Standards. For other applications, secondary standards must be prepared and analyzed by independent methods. The sample preparation procedures vary considerably. For monitoring process efficiency, sample preparation is often kept at a minimum such as simply pouring loose powders into disposable cups. For the most accurate analyses, sample preparatton requires casting the alloys and finishing the surfaces. Matrix correction procedures are employed where concentrations of major constituents vary over wide ranges.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 17: Twenty-Second Annual Conference on Applications of X-ray Analysis, August 22-24, 1973 , 1973 , pp. 247 - 257
Copyright
Copyright © International Centre for Diffraction Data 1973

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References

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