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A Correction Method for Elemental Interactions and Physical Effects in the X-Ray Fluorescent Analysis of Silicate Powders

Published online by Cambridge University Press:  06 March 2019

A. B. Poole  and
S. M. Holloway
A. B. Poole
Affiliation:
Queen Mary College, University of London London, E.I., England
S. M. Holloway
Affiliation:
Queen Mary College, University of London London, E.I., England
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Abstract

Brieketted rock powder discs provide a convenient type of specimen for use in x-ray fluorescent analysis for both major and trace elements. The method is limited because variation of matrix makes calibration difficult over more than a limited range of specimen compositions.

Standard grinding and preparation procedures together with a ratio technique of measurement eliminate variation except that arising from chemical, mineralogical and particle size differences. Several series of standard rock samples have been prepared and the variation of measured intensity per unit concentration have been investigated for the analytical Lines of silicon, aluminium, iron, selenium and cadmium. Computer methods of multivatiate regression analysis have been used to calculate empirical correction factors based on this data and the mineralogical and chemical composition of the specimens. These correction factors have been used to correct the measured intensities of other specimens measured in separate experiments.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 12: Seventeenth Annual Conference on Applications of X-ray Analysis, August 21-23, 1968 , 1968 , pp. 534 - 545
Copyright
Copyright © International Centre for Diffraction Data 1968

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