FIELD: radiation protection. SUBSTANCE: polluted material is brought into contact with dilute solution containing carbonate and chelating agent to dissolve radioactive impurities. Dissolving composition is then separated from material being treated and dissolved impurities are removed by means of ion-exchange adsorbent bound to magnetic particles or via destructive oxidation of chelating agent followed by removing precipitated material by filtration. Possible chelating agents are ethylenediaminetetraacetic acid, citrate, oxalate, or 8-hydroxyquinoline, pH of solution being predominantly equal to 9-11. Dissolving composition is advantageously supplemented by oxidant, in particular, hydrogen peroxide. After treatment of material, dissolving composition is restored (if necessary) and reused. EFFECT: increased efficiency and selectivity of removing radionuclides such as uranium, thorium, radium, plutonium, and americium. 14 cl, 2 dwg
