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Selectivity behaviour of a bonded phosphonate-carboxylate polymeric ion exchanger for metal cations with varying eluent compositions
Citation
Shaw, M and Nesterenko, PN and Dicinoski, GW and Haddad, PR, Selectivity behaviour of a bonded phosphonate-carboxylate polymeric ion exchanger for metal cations with varying eluent compositions, Journal of Chromatography A, 997, (1-2) pp. 3-11. ISSN 0021-9673 (2003) [Refereed Article]
DOI: doi:10.1016/S0021-9673(03)00111-0
Abstract
The chromatographic behaviour of a commercially available ion-exchange stationary phase (the Dionex IonPac CS12A column) is described for a wide range of transition and heavy metal ions with nitric acid eluents containing chloride and nitrate potassium salts. The separation selectivity was found to arise from simultaneous ion-exchange interactions and chelation with the attached carboxylic and phosphonic acid groups. These interactions were investigated by altering the ionic strength and pH of the eluent and also the column temperature. Strong affinity of the stationary phase towards heavy metal ions, in particular bismuth and the uranyl ion was observed at low pH under chelating ion-exchange conditions, with high efficiency separations of other ions including cadmium and lead being possible with short analysis times (∼5-15 min). Examples are given of separations obtained using 4-(2-pyridylazo)resorcinol or Arsenazo III as the post-column chromogenic reagents, demonstrating the potential versatility and utility of this stationary phase for heavy metal ion analysis. © 2003 Elsevier Science B.V. All rights reserved.
Item Details
Item Type: | Refereed Article |
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Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Separation science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Shaw, M (Dr Matt Shaw) |
UTAS Author: | Nesterenko, PN (Professor Pavel Nesterenko) |
UTAS Author: | Dicinoski, GW (Associate Professor Gregory Dicinoski) |
UTAS Author: | Haddad, PR (Professor Paul Haddad) |
ID Code: | 27512 |
Year Published: | 2003 |
Web of Science® Times Cited: | 30 |
Deposited By: | Chemistry |
Deposited On: | 2003-08-01 |
Last Modified: | 2011-10-24 |
Downloads: | 0 |
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