A correction for interelemental background contributions in energy‐dispersive X‐ray (EDX) spectroscopy

The theoretical relationships between fluorescence intensity and concentration have been used for the calculation of correction constants of the Lachance‐‐Traill and Rasberry‐‐Heinrich equation for systems of solutions. The constants have also been calculated by means of the multivariate least‐‐squares method. Those two alternatives have been tested on systems of Cu‐‐Fe‐‐Zn and Cu‐‐Fe‐‐Zn‐‐Pb in 3.5% aqueous nitric acid and compared with the simple two‐variable linear relationship between fluorescence intensity and concentration. The multivariate least‐‐squares alternative gives for the Lachance‐‐Traill method very accurate results (average relative deviation does not exceed 0.18%). In a theoretical discussion, the relationship between optimum sample concentration and solvent correction (enhancement) constant is shown. The optimum conditions for a background reading are also calculated.

Multielement x‐ray fluorescence spectrometry of solutions

Buděšínský

1980

A new approach to the particle‐size effect correction in the x‐ray fluorescence analysis of multimetallic ore slurries

Lankosz

1988

A method of correcting for particle-size effects in the XRF analysis of ore slurries is proposed. The use of a calculated heterogeneity factor for correcting the intensity of fluorescent x-rays from the determined element is suggested. The possibility of using a value of a weight fraction of particles smaller than 75 pm for determining the heterogeneity factors has been studied. The method has been tested experimentally on samples simulating zinclead and copper ore slurries.

Use of theoretical accurate binary influence coefficients with Tertian's equation in x‐ray fluorescence analysis of silicate rocks in borax glass beads

Muia

Grieken

1990

A study of the suitability of the Tertian algorithm using new 'accurate' binary influence coefficients and a comparison standard for x-ray fluorescence analysis of geological materials prepared as borax glass beads was performed. The algorithm was found to give satisfactory results for the analysis of four major components in geological materials. Even in the worst case, when there is a factor of 20 difference in the concentration in the specimen and a comparison standard, the algorithm gives results which differ from the true results by a factor of about 2. This makes the algorithm attractive as a diagnostic tool in analyses of unknown specimens and in the identification of appropriate standards. The binary coefficients are easily calculated so that the algorithm can be implemented on a minicomputer.