Influence of complex formation on the chromatographic behaviour of inorganic ions on sodium carboxymethylcellulose and dowex 50-X4 (Na+) thin layers
✍ Scribed by L. Lepri; P.G. Desideri
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 737 KB
- Volume
- 84
- Category
- Article
- ISSN
- 1873-3778
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✦ Synopsis
The chromatographic behaviour of 16 metal ions on thin layers of sodium carboxymethylcellulose and Dowex 50-X4 (Na") was investigated. The eluents used were acetate, gluconate, lactate and oxalate buffer solutions at constant ionic strength. The influence on the RI: values of some parameters (the affinity of the ions for the exchanger, the concentration and the type of buffer solution) was determined. Criteria are proposed for the analytical use of these parameters.
The stability constants of the complexes with the above ligands and the selectivity coefficients of the ions for the two exchangers were calculated. Finally, the validity of the method for the determination of the stability constants for monoand bidentate ligands is discussed.