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Mass Absorption Coefficient Determination Using Compton Scattered Tube Radiation: Applications, Limitations and Pitfalls

Published online by Cambridge University Press:  06 March 2019

J. P. Willis
J. P. Willis*
Affiliation:
Department of Geochemistry, University of Cape Town Rondebosch, South Africa, 7700
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Extract

Trace element determination by X-ray fluorescence spectrometry is subject, like almost all instrumental analytical techniques, to systematic errors, also known as matrix effects. This paper deals with the determination of mass absorption coefficients (MACs), using Compton peak intensities, for the correction of matrix effects arising only from elemental absorption in the sample.

When absorption effects are significant the relationship between net analyte peak intensity and concentration will no longer be constant, and corrections will be necessary for accurate analyses.

Type
VI. Geological and Other Applications of X-Ray Spectrometry
Information
Advances in X-Ray Analysis , Volume 34: Thirty-Ninth Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1990 , 1990 , pp. 243 - 261
Copyright
Copyright © International Centre for Diffraction Data 1990

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References

Adler, I., 1966, “X-ray emission spectrography in Geology”, Elsevier, New York.Google Scholar
Croudace, I. W. and Gilligan, J. M., 1990, Versatile and accurate trace element determinations in iron-rich and other geological samples using X-ray fluorescence analysis, X-ray Spectrom., 19: 117.Google Scholar
Dewison, M. G. and Kanaris-Sotiriou, R., 1986, The determination of trace elements in whole coal by rhodium tube X-ray fluorescence spectrometry: a rock-based synthetic coal calibration, Int. J. Coal Geology, 6: 327.Google Scholar
Feather, C. E. and Willis, J. P., 1976, A simple method for background and matrix correction of spectral peaks in trace element determination by X-ray fluorescence spectrometry, X-ray Spectrom., 5: 41.Google Scholar
Harvey, P. K. and Atkin, B. P., 1981, The rapid determination of Rb, Sr and their ratios in geological materials by X-ray fluorescence spectrometry using a rhodium X-ray tube, Chem. Geol., 32: 291.Google Scholar
Heinrich, K. F. J., 1966, X-ray absorption uncertainty, in “The electron microprobe”, T. D.McKinley, K. F.J. Heinrich and D. B. Wittry (eds), Wiley, New York.Google Scholar
Heinrich, K. F. J., 1986, Mass absorption coefficients for electron probe microanalysis, in “Proc. 11th Int. Congress on X-ray Optics and Microanalysis, London, Canada”, J. B.Brown and R. H. Packwood (eds).Google Scholar
Jenkins, R. and de Vries, J. L., 1969, “Practical X-ray Spectrometry”, 2nd edn., Macmillan,London.Google Scholar
Mills, J. C., Turner, K. E., Roller, P. W. and Belcher, C. B., 1981, Direct determination of trace elements in coal: wavelength-dispersive X-ray spectrometry with matrix correction using Compton-scattered radiation, X-ray Spectrom., 3: 131.Google Scholar
Nesbitt, R. W., Mastins, H., Stolz, G. W. and Bruce, D. R., 1976, Matrix corrections in trace element analysis by X-ray fluorescence: an extension of the Compton-scattering technique to long wavelengths, Chem. Geol., 18: 203.Google Scholar
Reynolds, R. C., 1963, Matrix corrections in trace element analysis by X-ray fluorescence: estimation of the mass absorption coefficient by Compton scattering, Am. Mineral., 48: 1133.Google Scholar
Reynolds, R. C., 1967, Estimation of mass absorption coefficients by Compton scattering: improvements and extensions of the method, Am. Mineral., 52: 1493.Google Scholar
Sumartojo, J. and Paris, M. W., 1980, A method for measuring X-ray mass-absorption coefficients of geological materials, Chem. Geol., 28: 341.Google Scholar
Tertian, R. and Claisse, F., 1982, “Principles of quantitative X-ray fluorescence analysis”, Heyden, London.Google Scholar
Walker, D., 1973, Behavior of X-ray mass absorption coefficients near absorption edges; Reynold's method revisited, Am. Mineral., 58: 1069.Google Scholar
Williams, K. L., 1987, “Introduction to X-ray Spectrometry”, Allen & Unwin, London.Google Scholar
Willis, J. P., 1986, A comparison of trace element analysis of whole coal by INAA and XRFS, in: “Contr. Post CSI-Symposium CSI XXIV: Analysis of materials (metals, ceramics, minerals) using spectrographic methods, Jülich 1985. Jül-Conf-55”.Google Scholar
Willis, J. P., 1989, Compton scatter and matrix correction for trace element analysis of geological materials, in: “X-ray Fluorescence Analysis in the Geological Sciences: Advances in Methodology”, S. T. Ahmedali, ed., Geological Association of Canada, St. John's.Google Scholar