Ion exchange studies of Arsenazo-III and thorium(IV) from aqueous solutions of Arsenazo-III with AG-2×8, Dowex-50 W×8 and Chelex-100
| Autor: | F. H. El-Sweify, E. A. A. El-Shazly, M. K. K. Shehata |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Aqueous solution
Ion exchange Health Toxicology and Mutagenesis Inorganic chemistry Public Health Environmental and Occupational Health Thorium chemistry.chemical_element Sorption Arsenazo III Pollution Analytical Chemistry Metal Chelex 100 chemistry.chemical_compound Nuclear Energy and Engineering chemistry visual_art Reagent visual_art.visual_art_medium Radiology Nuclear Medicine and imaging Spectroscopy Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry Articles. 198:77-87 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/bf02038247 |
| Popis: | The sorption behavior of Th(IV) from intermediate acidic solutions (0.5–1.5N HCl) of Arsenazo-III with three different types of ion exchangers, namely Dowex-50 W×8, AG-2×8 and Chelex-100 is studied at different concentrations of Arsenazo-III corresponding to metal: reagent ratio of 1∶1 to 1∶3. The sorption behavior of Arsenazo-III with AG-2×8 and Chelex-100 under various experimental conditions is studied as well. Complete sorption of the reagent on AG-2×8 under all studied conditions is found. The sorption process from solutions at high pH-values is found to be relatively slow. Complete sorption of reagent on Chelex-100 is found from acidic solutions. The percent uptake decreases sharply with increasing pH value. While partial sorption of Th(IV) or Th(IV)-Arsenazo-III complexes on Dowex-50 W×8 or AG-28, respectively, is found, Chelex-100 is found to be selective for concentrating thorium as coloured Arsenazo-III complex which may be useful in ion exchange phase absorptiometry. The sorbed complex from 0.5N HCl solutions of Arsenazo-III is proved to be ThL. |
| Databáze: | OpenAIRE |
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