K. N. Dvoeglazov, E. D. Filimonova, L. N. Podrezova, E. Yu. Pavlyukevich
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引用次数: 0
Abstract
The Тс(VII) reduction with 1,2-diformylhydrazine in nitric acid solutions in the presence of uranyl nitrate was studied by spectrophotometry. Tc(VII) is reduced to Тс(IV) via intermediate Tc(V) species. The optical spectra were resolved into two components by mathematical deconvolution. The kinetic curves are S-shaped. Presumably, the induction period is associated with the formation of Тс(V). The rate equation of the Тс(IV) formation under these conditions was obtained. The Tc(V) formation rate increases with an increase in the diformylhydrazine and U(VI) concentrations, initial Тс(VII) concentration, and temperature but decreases with an increase in the nitric acid concentration. From the data obtained, the reaction constants were calculated and the partial reaction orders with respect to components were found.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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