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Simultaneous ion-exclusion chromatrography and cation-exchange chromatography of anions and cations in environmental water samples on a weakly acidic cation-exchange resin by elution with pyridine-2,6-dicarboxylic acid

Citation

Ding, MY and Tanaka, K and Hu, W and Hasebe, K and Haddad, PR, Simultaneous ion-exclusion chromatrography and cation-exchange chromatography of anions and cations in environmental water samples on a weakly acidic cation-exchange resin by elution with pyridine-2,6-dicarboxylic acid, Analyst, 126, (5) pp. 567-570. ISSN 0003-2654 (2001) [Refereed Article]


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Copyright Statement

Copyright © 2001 Royal Society of Chemistry

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

DOI: doi:10.1039/b100104n

Abstract

A non-suppressed conductivity detection ion chromatographic method using a weakly acidic cation-exchange column (Tosoh TSKgel OApak-A) was developed for the simultaneous separation and determination of common inorganic anions (Cl–, NO3– and SO42-) and cations (Na+, NH4+, K+, Mg2+ and Ca2+). A satisfactory separation of these anions and cations on the weakly acidic cation-exchange column was achieved in 25 min by elution with a mixture of 1.6 mmol L–1 pyridine-2,6-dicarboxylic acid and 8.0 mmol L–1 18-crown-6 at flow rate of 1.0 mL min–1. On this weakly acidic cation-exchange resin, anions were retained by an ion-exclusion mechanism and cations by a cation-exchange mechanism. The linear range of the peak area calibration curves for all analytes were up to two orders of magnitude. The detection limits calculated at S/N = 3 ranged from 0.25 to 1.9 µmol L–1 for anions and cations. The ion-exclusion chromatography–cation-exchange chromatography method developed in this work was successfully applied to the simultaneous determination of major inorganic anions and cations in rainwater, tap water and snow water samples.

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:Haddad, PR (Professor Paul Haddad)
ID Code:22165
Year Published:2001
Web of Science® Times Cited:10
Deposited By:Chemistry
Deposited On:2001-08-01
Last Modified:2011-08-03
Downloads:0

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