Lasheen, Y F Chromatographic separation of certain metal ions using a bifunctional quaternary ammonium-sulfonate mixed bed ion-exchanger. [electronic resource] - Journal of chromatography. A Dec 2006 - 202-9 p. digital Publication Type: Journal Article ISSN: 0021-9673 Standard No.: 10.1016/j.chroma.2006.09.069 doi Subjects--Topical Terms: Ammonium Sulfate--chemistryBeverages--analysisCadmium--isolation & purificationCations, Divalent--isolation & purificationChromatography, Ion Exchange--methodsCobalt--isolation & purificationCopper--isolation & purificationHydrogen-Ion ConcentrationLead--isolation & purificationMetals--isolation & purificationNickel--isolation & purificationOxalates--chemistryOxalic Acid--chemistryWater--chemistryZinc--isolation & purification