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Simultaneous separation of inorganic anions and cations using capillary electrophoresis with a movable contactless conductivity detector

Citation

Unterholzner, V and Macka, M and Haddad, PR and Zemann, AJ, Simultaneous separation of inorganic anions and cations using capillary electrophoresis with a movable contactless conductivity detector, Analyst, 127, (6) pp. 715-718. ISSN 0003-2654 (2002) [Refereed Article]


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Copyright Statement

Copyright � 2002 Royal Society of Chemistry

Official URL: http://www.rsc.org

DOI: doi:10.1039/b202765h

Abstract

A number of small inorganic anions and cations were separated after injection of the sample into both ends of a separation capillary. The ions were detected using a capacitively coupled contactless conductivity detector (CCCCD) which could be placed at various positions along the capillary length. Counter-directional migration of anions and cations occurs towards the detector, which is placed at an appropriate position along the capillary so that the migration order is determined by the respective effective separation capillary lengths for both anions and cations. As the CCCCD detector can be easily moved to any position along the capillary, virtually any effective separation length can be attained. Depending on the number of analytes in the sample, one can choose to obtain either electropherograms with inter-migrating zones of cations and anions or separations with distinct regions of anion and cation zones, respectively. A new term apparent separation selectivity is introduced to describe the manner in which the position of the detector can be varied in order to determine the final separation.

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
Author:Macka, M (Professor Mirek Macka)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:25303
Year Published:2002
Web of Science® Times Cited:60
Deposited By:Chemistry
Deposited On:2002-08-01
Last Modified:2011-08-02
Downloads:0

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