METHOD OF ION-EXCHANGE ISOLATION OF YTTRIUM RADIONUCLIDES, RARE-EARTH AND TRANSPLUTONIUM ELEMENTS FROM SOLUTIONS OF ALPHAHYDROXYISOBUTYRIC ACID AND SALTS THEREOF

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to technology of obtaining preparations of radioactive elements and can be used in analytical chemistry. The method of extracting radionuclides involves preparation of a working solution with 6≤pH≤8, total concentration of alpha-hydroxyisobutyric acid and salts thereof not more than 0.2 mol/l, bringing said working solution into contact with Chelex-100 sorbent, washing the sorbent with water and an acetic acid solution and elution of radionuclides with a solution of mineral acid with concentration of 0.03-0.1 mol/l.;EFFECT: high degree of separation and efficient purification of solutions from iron impurities.;2 cl, 4 tbl, 4 ex, 1 dwg