FIELD: chemistry.
SUBSTANCE: mixture contains substituted bis-aryl-tetrazolyl-pyridine, having formula:
, where R1 and R2 denote hydrogen, halogen (CI, Br, F, I), alkyl, alkoxy. The solvent used is organic liquids with permittivity greater than 4. Components of the mixture are in the following ratio, mol/l: heterocyclic compound 0.001-0.2; organoboron complex compound 0.001-0.2, solvent - the rest.
EFFECT: efficient separation of a pair of transuranic and rare-earth elements during extraction from acidic and saline media.
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