FIELD: refining operations for producing palladium, ruthenium, and other concentrates cleaned of radionuclides. SUBSTANCE: method for cleaning nitrate solutions containing radionuclides from antimony-125 involves setting nitric acid number from pH 5 to 3 mol/l in cleaned solution followed by introduction of solution in contact with collector - insoluble oxide compounds of antimony (III) and (V), such as antimony oxides or oxysalts. Amount of collector in this case is 5-10 g/l in solution being cleaned. EFFECT: improved efficiency of cleaning nitric solutions from antimony and other radionuclides. 2 cl, 2 tbl
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