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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

Citation

Harakuwe, AH and Haddad, PR and Thomas, R, 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 (1998) [Refereed Article]


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DOI: doi:10.1016/S0021-9673(97)00878-9

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 Details

Item Type:Refereed Article
Keywords:Chloride; Sulfate; Inorganic anions
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Instrumental Methods (excl. Immunological and Bioassay Methods)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Harakuwe, AH (Mr Anthony Hekare Harakuwe)
Author:Haddad, PR (Professor Paul Haddad)
Author:Thomas, R (Dr Rudi Thomas)
ID Code:14139
Year Published:1998
Web of Science® Times Cited:7
Deposited By:Chemistry
Deposited On:1998-08-01
Last Modified:2010-03-10
Downloads:0

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