Multi-element Mixtures Research Articles

Determination of inter-element effects through Monte Carlo simulation of X-ray fluorescence

A Monte Carlo model is developed to simulate the X-ray fluorescence process within a homogeneous multi-element mixture. Validation of the model is obtained through comparison of the model's predictions with experimental data for the iron–nickel–chromium system, for which the inter-element effects are severe. The results indicate that the Monte Carlo model is an excellent simulator and may be used in place of a set of standards to determine the influence coefficients for analysis of fluorescence data.

Determination of Metals in Paint and Vinyl Additives by Atomic Absorption Spectrophotometry

A method is described for determining the metal content of paint and vinyl additives by atomic absorption spectrophotometry. The chief advantage of this technique is the ability to analyze multielement metallo-organic compounds and complex mixtures without prior chemical separation at a considerable savings in time, compared to wet chemical methods. Accuracy of better than 1% relative error, and precision equivalent to wet chemical analysis were obtained.