SYNTHESIS OF NEW FUNCTIONAL SORBENT ON THE BASIS OF COPOLYMER OF ALLILPROPYONAT-MALEIN ANHYDRIDE –STYRENE AND ITS USE FOR EXTRACTION OF COPPER IONS (ΙL) FROM WATER SOLUTIONS

O.H.Akperov, H.A.Qadimova, E.O.Akperov, A.Z.Alekperova