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
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