Chromatographic separation of certain metal ions using a bifunctional quaternary ammonium-sulfonate mixed bed ion-exchanger
| Autor: | A.A. Abdel-Rassoul, Y. F. Lasheen, Ayman F. Seliman |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Cations
Divalent Metal ions in aqueous solution Oxalic acid Inorganic chemistry Ion chromatography Resorcinol Sodium oxalate Biochemistry Analytical Chemistry Beverages chemistry.chemical_compound Nickel Oxalates Chromatography Ion exchange Elution Oxalic Acid Organic Chemistry Water Cobalt General Medicine Hydrogen-Ion Concentration Ammonium oxalate Chromatography Ion Exchange Zinc Lead chemistry Ammonium Sulfate Metals Copper Cadmium |
| Zdroj: | Journal of Chromatography A. 1136:202-209 |
| ISSN: | 0021-9673 |
| Popis: | The separation behaviour of Pb(2+), Cu(2+), Cd(2+), Co(2+), Zn(2+) and Ni(2+) on bifunctional quaternary ammonium-sulfonate mixed ion-exchangers (Dionex, IonPac CS5 and CG5) was studied using different eluents including solutions of oxalic acid, potassium oxalate, sodium oxalate and ammonium oxalate. Separated metal ions were followed by using 4-(2-pyridylazo) resorcinol (PAR) as post-colouring complex. The retention factors of different ions proved to be dependent on the pH, concentration, nature of each complexing agent, and to less extent on eluent flow rate. The retention behaviour and separation mechanism of complexed metal analytes are discussed in the light of the stability of metal complexes and the ligand complexing ability of used eluent. Comparison between various mobile phases is evaluated, and both sodium and potassium oxalate can be used successfully for simultaneous separation of studied metals with good resolution within short elution periods. The method can be used in different applications including analysis of bottled water from different resources. |
| Databáze: | OpenAIRE |
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