COMPLEXING SORBENT AND METHOD OF PREPARING SAID SORBENT Russian patent published in 2010 - IPC B01J20/22 B01J20/06 B01J20/32 

FIELD: chemistry.

SUBSTANCE: invention relates to analytical chemistry, chemical engineering, ecology, specifically to methods of preparing sorption materials and their use in extracting ions of different metals from aqueous solutions. Proposed is a complexing sorbent and a method of preparing said sorbent, which involves immobilisation of an organic complexing reagent which is pre-treated with an aqueous solution of polyhexamethylene guanidine on an inorganic oxide carrier, where the organic complexing reagent is selected from: 4,7-dimethyl-1, 10-phenanthroline disulphonic acid, 2-9-dimethyl-4,7-phenanthroline disulphonic acid, nitroso-R-salt, 4,5- dioxynaphthalene-2,7-disulphonic acid (chromotropic acid) and its derivatives, 8-hydrooxyquinoline-5-sulphonic acid.

EFFECT: obtaining a universal complexing sorbent with high sorption capacity of a wide range of aliovalent ions in weakly acidic, neutral and weakly alkaline media, and capable of separate and group extraction of elements.

3 cl