METHOD OF PREPARING HIGHLY EFFICIENT COLUMNS FOR ION CHROMATOGRAPHY Russian patent published in 2013 - IPC B01D15/08 G01N30/02 

FIELD: chemistry.

SUBSTANCE: invention relates to chromatography. An anionite suspension in 20-25% aqueous glycerol solution is prepared, followed by centrifuging and decantation to obtain an anionite base residue with particle size of 12-16 mcm. A cationite modifier nanosuspension is prepared by converting cationite functional groups to a hydrogen form, washing with water, drying, grinding the particles in a ball mill, followed by centrifuging and decantation to obtain a cationite suspension in water with particle size of 50-300 nm. A column is filled with the anionite suspension in aqueous glycerol solution; the anionite layer is packed under pressure; the anionite is converted to a hydroxyl form. The cationite nanoparticles are laid into macropores of the anionite base. Nanoparticles are removed from the outer surface of the anionite by passing the cationite modifier nanosuspension through the column until breakthrough, and excess modifier is then removed by passing an acid, water and a solvent until equilibrium is established.

EFFECT: obtaining chromatography columns with variable selectivity, having longevity, chemical resistance and capable of being regenerated.

7 cl, 2 tbl, 4 dwg