Separation of gallium and indium from ores matrix by sorption on Amberlite XAD-2 coated with PAN |
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| Authors: | P Bermejo-Barrera N Martínez-Alfonso A Bermejo-Barrera |
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| Institution: | (1) Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemistry, University of Santiago de Compostela, 15706, Santiago de Compostela, Spain e-mail: qn1956@usc.es, ES;(2) Department of Analytical Chemistry, Faculty of Chemistry, University of La Habana, Cuba, CU |
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| Abstract: | A chelating sorbent obtained by adsorption of 1-(2-pyridylazo)-2-naphthol (PAN) on Amberlite XAD-2 was used for the preconcentration
of Ga and In. The analytical characteristics of the chelating sorbent were investigated and optimun sorption conditions for
these metals under dynamic conditions were established. A peristaltic pump is used to adjust the flow rate of the solution.
Elements are collected from the column by using a mixture adjusted to a pH range of 4–7 and 6–12 by ammonia or ammonium chloride
for Ga and In, respectively. The procedure developed was applied to the analysis of different ores.
Received: 10 July 2000 / Revised: 21 September 2000 / Accepted: 23 September 2000 |
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