Abstract
AbstractPolynomial expressions for use as an approximation of the dependence of x‐ray fluorescence intensities on the entire composition of the sample are suggested for correcting for matrix effects in systems such as steels and alloys where the variations of these effects are large. They yield accurate results, and use the fundamental influence coefficients calculated by equations containing fundamental parameters which are determined by the simplest local splines. The essential difference in these fundamental influence coefficients is that they are not connected with the sample chemical composition after the determination and are simulated for maximum possible variations of interfering element concentrations in the matrix. Results for the compositions of some NBS steel standards calculated from published x‐ray fluorescence intensities and the results of analyses of stainless steels are discussed.
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