METHOD OF DETERMINING OPTIMAL PARAMETERS OF DISSOLUTION OF OXIDES OF TRANSITION METALS IN SOLUTIONS, CONTAINING COMPLEXING AGENT

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to method of determining optimal parameters of dissolution of oxides of transition metals in solutions, which contain complexing agent, and can be applied in atomic energy. As parameters, applied are volume coefficients of distribution of radioactive isotopes of transition metals, which determine composition of oxides, between solutions, which contain complexing agent, and strong-base anionites in form of said complexing agent (complexits) and balanced values of solution pH. Radioactive isotopes of transition metals are introduced into fixed volumes of analysed solutions, after which, fixed volumes of complexits are introduced into solutions. Initial and final activity of solutions is measured. Also measured are balanced values of pH of solutions. Ranges, satisfying optimal parameters, which must be supported in contours of NEP directly in the process of dissolution of oxides in the process of washing and deactivation of NEP contours, are determined by the results of measurements.;EFFECT: increased reliability of determination of optimal parameters of dissolution of oxides of transition metals in complexing agent solutions and absence of necessity of carrying out complex analyses of metals to determine concentration of metal cations in solutions of complexons.;2 cl, 2 dwg, 1 tbl