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Separation of inorganic anions on a high capacity porous polymeric monolithic column and application to direct determination of anions in seawater

Citation

Evenhuis, CJ and Buchberger, WW and Hilder, EF and Flook, KJ and Pohl, CA and Nesterenko, PN and Haddad, PR, Separation of inorganic anions on a high capacity porous polymeric monolithic column and application to direct determination of anions in seawater, Journal of Separation Science, 31, (14) pp. 2598-2604. ISSN 1615-9306 (2008) [Refereed Article]

DOI: doi:10.1002/jssc.200800205

Abstract

A commercially available 4.6 mm. id × 50 mm polymethacrylate-based monolithic strong anion exchange column (ProSwift™ SAX-1S) designed for the separation of proteins has been successfully used to separate small inorganic anions in the presence of a seawater sample matrix. Using a hydroxide eluent with suppressed conductivity detection the ion exchange capacity of this column declined over time; however, using KC1 as the eluent, the column performance was stable with a capacity of 530 μequiv. for nitrate. The optimum conditions for the separation of iodate, bromate, nitrite, bromide and nitrate were assessed by constructing van Deemter plots using 1.00 and 0.100 M KC1. Efficiencies of up to 26 700 plates/m were recorded using 1.00 M KCl, at a flow rate of 0.20 mL/min but iodate was not baseline resolved from the void peak. By reducing the concentration of the eluent to 0.100 M, efficiencies of up to 39900 plates/m could be obtained at 0.35 mL/min. By employing a linear gradient ranging from 0.05 to 1.00 M KCl the ions dissolved in distilled water or a salt water matrix could be baseline separated in less than 3 min at a flow rate of 2.50 mL/min. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

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:Evenhuis, CJ (Dr Christopher Evenhuis)
Author:Buchberger, WW (Professor Wolfgang Buchberger)
Author:Hilder, EF (Professor Emily Hilder)
Author:Nesterenko, PN (Professor Pavel Nesterenko)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:55162
Year Published:2008
Web of Science® Times Cited:17
Deposited By:Chemistry
Deposited On:2009-03-05
Last Modified:2015-01-21
Downloads:0

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