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Determination of Barium and Selected Rare-Earth Elements in Geological Materials Employing a HpGe Detector by Radioisotope Excited X-Ray Fluorescence*

Published online by Cambridge University Press:  06 March 2019

J.J. LaBrecque  and
I.L. Preiss
J.J. LaBrecque
Affiliation:
Instituto Venezolano De Investigaciones, Cientificas-IVIC, Apartado 1827, Caracas, Venezuela
I.L. Preiss
Affiliation:
Instituto Venezolano De Investigaciones, Cientificas-IVIC, Apartado 1827, Caracas, Venezuela
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Extract

The laterite material (geological) from Cerro Impacto was first studied by air radiometric techniques in the 1970's and was found to have an abnormally high radioactive background. Further studies showed this deposit to be rich in thorium, columbium, barium and rare-earth elements (mostly La, Ce, Pr and Nd). A similar work (1) has been reported for the analysis of Brazil’s lateritic material from Morro do Ferro to determine elemental compositions (including barium and rare-earth elements) and its relationship to the mobilization of thorium from the deposit using a Co-57 radioisotope source.

Type
VIII. Applications of XRF to Archeological, Geochemical and Industrial Materials
Information
Advances in X-Ray Analysis , Volume 27: Thirty-Second Annual Conference on Applications of X-ray Analysis, August 1-5, 1983 , 1983 , pp. 475 - 480
Copyright
Copyright © International Centre for Diffraction Data 1983

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Footnotes

†

This author was on sabatical leave at RPI where this work was performed.

*

This work forms part of UNESCO's IGCP-129 Project and was funded in part by an international grant between CONICIT (Venezuela) and NSF (USA).

References

1. Lauer, G.R., Furfaro, J., Carlos, M., Lei, W. Ballao, R., and Kneip, T.J., Advances in X-Ray Analysis, 25 (1981) 201.Google Scholar
2. LaBrecque, J.J., Parker, W.C., and Adams, D., J. of Radioanal. Chem., 59 (1980) 193.Google Scholar
3. Hale, D., Russ, J.C. and Leyden, D.E., Microbeam Analysis, (1982) 473.Google Scholar
4. Borowski, K., Preiss, I.L., LaBrecque, J.J., and Pauley, C., Utilization of an Apple II + Microcomputer as a Multichannel Analyzer for X-ray Fluorescence Spectrometry, J. of Computer Enhanced Spectroscopy (in press).Google Scholar