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Analysis of difficult samples by capillary zone electrophoresis I. Simultaneous separation of detrimental anions in concrete digested with concentrated nitric acid

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Harakuwe, AH and Haddad, PR and Thomas, R (1998) Analysis of difficult samples by capillary zone electrophoresis I. Simultaneous separation of detrimental anions in concrete digested with concentrated nitric acid. Journal of Chromatography A, 793 (1). pp. 187-192. ISSN 0021-9673

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Abstract

The analysis of detrimental anions (chloride and sulfate) in concrete digested with concentrated nitric acid is extremely difficult due to the high acidity, ionic strength and nitrate background of the digest. Employing capillary zone electrophoresis, chloride and sulfate in a diluted digest were separated simultaneously with full resolution in less than 6 min. An electrolyte comprising 10 mM lithium nitrate, 1 mM thiocyanate and 0.8% (v/v) 1-butanol at pH 6 was used. The development of this electrolyte and the analytical performance are discussed.

Item Type: Article
Keywords: Chloride; Sulfate; Inorganic anions
Journal or Publication Title: Journal of Chromatography A
Page Range: pp. 187-192
ISSN: 0021-9673
Identification Number - DOI: 10.1016/S0021-9673(97)00878-9
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 17 Nov 2008 22:14
Last Modified: 18 Nov 2014 03:53
URI: http://eprints.utas.edu.au/id/eprint/8022
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