Selective preconcentration of gallium using Muromac A-1 ion exchange column

✍ Scribed by C.R.M. Rao

• Book ID: 102623818
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 339 KB
• Volume: 318
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(95)00411-4

✦ Synopsis

A method utilizing an ion-exchange column of Muromac A-l has been developed for the selective preconcentration and separation of gallium from other elements like Cu, Pb, Zn, Ni, Co, Mn, Fe, Cd and Indium. A seawater sample adjusted to pH 5.5 with acetate buffer is passed through the Muromac A-l column and then gallium is selectively and quantitatively eluted using 2 M ammonia as the eluent. The elution curves at various pH values clearly indicate that the recovery of gallium is quantitative between pH 3.0-7.0. Further, as a comparison the elution of gallium on various other chelating resins like Chelex-100, 7-dodecenyl-8-quinolinol impregnated on XAD-4, Fractogel immobilized hydroxy quiuoline was also investigated using different eluents like 2 M hydrochloric acid, 2 M nitric acid and 2 M ammonia.