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Use of ionic polymers as stationary and pseudo-stationary phases in the separation of ions by capillary electrophoresis and capillary electrochromatography
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Abstract
One of the problems with capillary electrophoresis is a lack of versatility regarding manipulation of the separation selectivity. A new and potentially universal concept is to introduce an ion-exchange component into a separation so that the migration of analyte ions is influenced by both their electrophoretic mobilities and their chromatographic properties. This may be accomplished by use of capillaries filled with or coated with solid ion-exchange polymers, or by addition of a soluble ionic polymer to the background electrolyte to create a pseudo-stationary phase. While each of these methods achieves the same result, they are not competitive, but rather complementary as the problems associated by one approach are overcome by the others. Recent highlights in the field are used to illustrate the flexibility that this approach provides to electrophoretic separation of ions.
Item Type: | Article |
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Authors/Creators: | Fritz, JS and Breadmore, MC and Hilder, EF and Haddad, PR |
Keywords: | Inorganic anions; Organic acids; Inorganic cations; Reviews; Ion chromatography–capillary electrophoresis; Electrochromatography; Stationary phases, electrochromatography; Capillary electrophoresis–ion chromatography |
Journal or Publication Title: | Journal of Chromatography A |
ISSN: | 0021-9673 |
DOI / ID Number: | 10.1016/S0021-9673(01)01403-0 |
Additional Information: | The definitive version is available at http://www.sciencedirect.com |
Item Statistics: | View statistics for this item |
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