FIELD: chemistry.
SUBSTANCE: invention relates to methods of recovery of metal salts from aqueous solutions without an organic solvent by means of an exfoliating system of antipyrine (AP) -water-sodium sulfate. Delaminating system for the selection of metal ions from aqueous solutions containing the derived from a group of pyrazolones, water and salting out item, where sodium sulfate presents as phase former, and hydrated form of antipyrine is extractant.
EFFECT: extraction of the extractant without the use of toxic and flammable organic solvents, which has a large extraction capacity with a minimum number of components in the system.
1 dwg, 1 tbl
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