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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

journal contribution
posted on 2023-05-16, 11:15 authored by Harakuwe, AH, Paul HaddadPaul Haddad, Thomas, R
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.

History

Publication title

Journal of Chromatography A

Volume

793

Pagination

187-192

ISSN

0021-9673

Department/School

School of Natural Sciences

Publisher

Elsevier

Place of publication

The Netherlands

Rights statement

The definitive version is available at http://www.sciencedirect.com

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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