eCite Digital Repository
Retention Characteristics of Lanthanide Ions on a Mixed Phosphonic Acid-Carboxylic Acid Cation Exchanger
Citation
Shaw, M and Nesterenko, PN and Dicinoski, GW and Haddad, PR, Retention Characteristics of Lanthanide Ions on a Mixed Phosphonic Acid-Carboxylic Acid Cation Exchanger, Australian Journal of Chemistry, 56, (2-3) pp. 201-206. ISSN 0004-9425 (2003) [Refereed Article]
DOI: doi:10.1071/CH02247
Abstract
The Chromatographic behaviour of lanthanide ions on a dual phosphonate- and carboxylate-functionalized ion-exchange resin (Dionex IonPac CS12A and CG12A) was studied using various mobile phase compositions. By suppressing ion-exchange interactions through increasing the ionic strength of the eluent, the column selectivity changed to that of a chelation mechanism via the phosphonate functional groups. Retention was based on the varying conditional stability constants of the lanthanide ions with the phosphonate groups. Eluent pH was additionally found to exert a strong influence on analyte retention, but no further changes to the column selectivity occurred. The inclusion of small concentrations of organic solvents could also be used to manipulate retention to a more minor extent, as could altering the column temperature. Examples of separations are given, especially the separation of gadolinium and europium, which are often co-eluted when using nitrogen-oxygen-chelating groups such as iminodiacetic acid.
Item Details
Item Type: | Refereed Article |
---|---|
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: | 27532 |
Year Published: | 2003 |
Web of Science® Times Cited: | 11 |
Deposited By: | Chemistry |
Deposited On: | 2003-08-01 |
Last Modified: | 2011-09-23 |
Downloads: | 0 |
Repository Staff Only: item control page