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Electrostatic ion chromatography of cations using an N-dodecylphosphocholine zwitterionic stationary phase and water as the mobile phase

Citation

Hu, W and Haddad, PR and Hasebe, K and Tanaka, K, Electrostatic ion chromatography of cations using an N-dodecylphosphocholine zwitterionic stationary phase and water as the mobile phase, Analytical Communications, 36, (3) pp. 97-100. ISSN 1359-7337 (1999) [Refereed Article]


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Copyright Statement

Copyright 1999 Royal Society of Chemistry

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

DOI: doi:10.1039/a809312a

Abstract

The separation of inorganic cations using a phosphocholine-type zwitterionic stationary phase [formed by coating an octadecyl silica column with a phosphocholine zwitterionic surfactant (PC-ZS)] and water as the mobile phase has been investigated. The PC-ZS possesses a positively charged group (+) and a negatively charged group (), with the (+) being outermost and the () being innermost. In other words, the positions of the functional groups are opposite to that for sulfobetaine-type zwitterionic surfactants (SB-ZS) used previously for the separation of inorganic anions. With a PC-ZS stationary phase, cations having the same charges (e.g., Mg2+, Ca2+, Ba2+) were separated successfully. This study shows that the separation selectivity of zwitterionic stationary phases towards inorganic anions or cations is determined chiefly by the positions of the two charged groups on the zwitterion. The elution order for the cations (for example Ba2+

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:Hu, W (Mr Wei Hu)
Author:Haddad, PR (Professor Paul Haddad)
Author:Tanaka, K (Dr Kazuhiko Tanaka)
ID Code:16236
Year Published:1999
Web of Science® Times Cited:24
Deposited By:Chemistry
Deposited On:1999-08-01
Last Modified:2010-02-20
Downloads:0

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