FIELD: chemistry.
SUBSTANCE: method for extraction of radionuclide cadmium-109 solution, which contains cadmium and silver radionuclides, consists in dissolution of irradiated silver in nitric acid, evaporation of obtained solution to humid salts, dissolution of formed nitrates and precipitation of main cadmium carbonate with excess of precipitating agent. Precipitation of main cadmium carbonate is carried out in presence of nitrate and ammonium hydroxide with concentrations: [NH4NO3]≥0.1 mol/l and 0.2≤[NH4OH]≤0.8 mol/l. As precipitating agent solution of sodium or potassium carbonate or hydrocarbonate is applied.
EFFECT: invention makes it possible to increase coefficient of cadmium purification without necessary of silver regeneration.
1 dwg, 2 tbl
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