DETERMINATION OF CORRECTION CONSTANTS IN X-RAY-FLUORESCENCE SPECTROMETRY BY A MULTIVARIATE LEAST-SQUARES METHOD

The multivariate least-squares method in combination with the Doolittle-Crout method is used for calculation of Lachance-Traill and Rasberry-Heinrich correction coefficients from experimental data. Inter-element, structural and particle size effects are thus taken into the account. The approach has been tested on the following systems: iron-nickel-chromium, copper-iron-sulfur (reverberatory matte), copper-iron-sulfur-silica-calcium oxide-aluminium oxide (copper concentrate) and copper-ferrous oxide-silica-calcium oxide-aluminum oxide (reverberatory slag). The average relative deviation does not exceed 1.04% for the Rasberry-Heinrich method and 2.17% for the Lachance-Traill method. © 1979.