X-ray Fluorescence Analysis of Flux-Cored Wire Burden

Interelement effects were estimated for the burden components of the PP-AN4 flux-cored wire, and the predominance of absorption effects was demonstrated. Reasons for the variation of the effective wavelengths in the primary excitation spectrum were revealed for some analytes. An iteration Δμ-correction method was proposed for calculating the weight portions of elements. This method is based on the regression analysis of the absorption parameters of test samples; it takes into account the variation of the effective wavelength of the primary radiation. The convergence of the iteration procedure was shown in the calculations of the weight portions of burden elements under real conditions. A method was proposed for the preparation of burden samples for analysis taking into account the peculiar features of the technological process. Metrological certification was performed in accordance with the industry-specific regulations. The results of X-ray fluorescence analysis of the burden were used for the quality control of the produced flux-cored wire.