FIELD: chemistry.
SUBSTANCE: method involves immobilizing hexacyanoferrate of transition metal into chitosan matrix and its heat treatment at 100-120°C. When immobilizing in chitosan acid solution, nickel salt solution (II) is introduced, and the mixture is dispersed into alkaline solution of potassium hexacyanoferrate or alkaline solution of potassium hexacyanoferrate is dispersed in acidic solution of chitosan containing nickel salt (II).
EFFECT: production of sorbent selective for cesium radionuclides that is resistant to peptization in solutions at elevated pH values.
2 cl, 3 dwg, 2 tbl
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