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Ion-chromatography performance of poly(aspartic) acid bonded silica with various pore sizes at different ionic strengths and column temperatures

Citation

Kebets, PA and Nesterenko, EP and Nesterenko, PN and Alpert, AJ, Ion-chromatography performance of poly(aspartic) acid bonded silica with various pore sizes at different ionic strengths and column temperatures, Microchimica Acta, 146, (2) pp. 103-110. ISSN 1436-5073 (2004) [Refereed Article]

DOI: doi:10.1007/s00604-004-0201-y

Abstract

A significant effect of pore size on selectivity was observed for anion exchange on polyaspartic acid-coated silica (PolyCAT A). The retention order of halogenide anions, Cl- <Br- <I-, was completely reversed between 30∈nm and 6∈nm pore materials. The zwitterionic nature of PolyCAT A made possible the simultaneous separation of anions and cations. With the column temperature, retention of cations is increased whereas retention of anions is decreased. The ionic composition of the eluent had a dramatic effect on separation efficiency with PolyCAT A of 30∈nm pores. The separation efficiency of ions was optimal in sulfuric acid-based eluents of reasonably high ionic strength. © Springer-Verlag 2004.

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:Nesterenko, PN (Professor Pavel Nesterenko)
ID Code:47547
Year Published:2004
Web of Science® Times Cited:9
Deposited By:Chemistry
Deposited On:2007-09-18
Last Modified:2011-11-21
Downloads:0

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