Analysis of the mixture of rare earth elements by atomic spectroscopy

Abstract

The authors of this paper give the characteristic and the principle of operation of the ICPE-9000 spectrometer, proposed for the chamber residue analysis that is one of the products of ion flotation, for individual rare earth elements and their mixture content by atomic spectroscopy. The chamber residue was obtained by conducting the ion flotation from nitrate solutions, containing individual rare earth elements of the cerium group and their mixture. The results of the analysis of the solutions by optical emission spectroscopy are shown in the form of molar concentration. According to the obtained experimental data, a tendency for the change of distribution coefficients, separation factors and pH values of maximum recovery at the different values of equilibrium aqueous phase pH value was identified. The possibility of the most effective separation of rare earth elements of the cerium group at different concentrations of indifferent ions was revealed, as well as the forms of recovered compounds were determined.