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Quantitative Determination of Ga, Zn, Cu, Hi, Mn, and Cr by X-Ray Fluorescence in Laterites and Bauxites Using Two Evaluation Methods

Published online by Cambridge University Press:  06 March 2019

Hasso Schorin
Hasso Schorin*
Affiliation:
IVIC, Centro de Ingeniería y Computación Apartado 1827, Caracas 1010-A, Venezuela
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Extract

Laterites and bauxites are residual products derived from a wide variety of rocks by intensive chemical weathering under strongly oxidizing and leaching conditions. Generally the main constituents of these residues are Fe, Al and Ti present in form of hydroxides and/or oxides. The content of silica depends on the thoroughness of the leaching process. The behaviour of trace and minor elements as Ga, Zn, Cu, Ni, Mn and Cr during the laterite/bauxite formation is not yet well established. Precise and accurate analyses of these elements are a prerequisite for such investigations. In this paper the standard addition method is presented and the results are compared with those obtained by calibration standardization. The accuracy and the precision of the methods as well as the distinction limit and the limit of detection for each element are given.

Type
III. XRF Applications: Mineral and Geological
Information
Advances in X-Ray Analysis , Volume 25: Thirtieth Annual Conference on Applications of X-ray Analysis, August 3-7, 1981 , 1981 , pp. 127 - 131
Copyright
Copyright © International Centre for Diffraction Data 1981

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