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Multielement Analysis of Unweighed Biological and Geological Samples Using Backscatter and Fundamental Parameters*

Published online by Cambridge University Press:  06 March 2019

K.K. Nielson  and
R.W. Sanders
K.K. Nielson
Affiliation:
Rogers and Associates Engineering Corp., Salt Lake City, Utah 84107
R.W. Sanders
Affiliation:
Pacific Worthwest Laboratory, Richland, Washington 99352
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Extract

A new approach to fundamental parameter calculations has been devised which makes use of incoherent and coherent backscatter intensities from the excitation radiation. The backscatter results from all sample constituents, and thus provides information on total sample mass as well as on bulk sample composition. By appropriately using the scatter intensities in fundamental parameter matrix calculations, accurate analyses of “unknown“ samples can be obtained without prior knowledge of the sample matrix. The backscatter with fundamental parameter (BFP) method is especially advantageous for biological, geological and environmental samples because of their bulk quantities of carbon, oxygen, and other light elements which cannot be explicitly determined for traditional fundamental parameter calculations.

Type
VII. XRF Computer Systems and Mathematical Corrections
Information
Advances in X-Ray Analysis , Volume 26: Thirty-First Annual Conference on Applications of X-ray Analysis, August 1-6, 1982 , 1982 , pp. 385 - 390
Copyright
Copyright © International Centre for Diffraction Data 1982

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Footnotes

*

This work supported in part by U.S. DOE Contract DE-AC06-76RLO 1830.

References

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