X-RAY SPECTRAL ANALYSIS OF NONHOMOGENEOUS MATERIALS Russian patent published in 2014 - IPC G01N23/223 

FIELD: chemistry.

SUBSTANCE: method includes determining intensity I_A of the analytical line of the determined element A in the analysed material, calculating intensity I_A2I in sample mixtures of the analysed material and a comparison sample with given content C_Bji of the determined element and comparing the intensity I_A and I_A2I quantitatively to obtain an estimate of the content C_A of the determined element in the analysed material. Estimation of the content of the determined element in the analysed material is carried out in the order of determining first the intensity I_A0 and content C_A0 of the determined element in the comparison sample, as well as significant coefficients of influence of "interfering" elements contained in the analysed material on the intensity of the determined element in the material, experimentally determining intensities of analytical lines of "interfering" elements contained in the analysed material and the comparison sample, converting the intensities I_A and I_A0 of the determined element A in the analysed material and the comparison sample, respectively, by taking into account intensities and significant influence coefficients of "interfering" elements and quantitative comparison of converted intensities I_Aj and I_A2I in the analysed material and calculation sample mixtures, respectively.

EFFECT: high accuracy of estimating content of an element.

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