Rapid chloride analysis using miniaturised isotachophoresis

Prest, J. E. and Baldock, S. J. and Fielden, P. R. and Goddard, N. J. and Mohr, S. and Brown, B. J. T. (2006) Rapid chloride analysis using miniaturised isotachophoresis. Journal of Chromatography A, 1119 (1-2). pp. 183-187. ISSN 0021-9673

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A new design of miniaturised separation device for performing isotachophoresis (ITP) has been produced. The device contains a simple arrangement of channels comprising a single separation channel with a ‘double T’ injection geometry. The device was produced in poly(methyl methacrylate) and incorporates an on-column conductivity detector. A new electrolyte system was developed to enable the rapid determination of chloride to be made. This electrolyte system uses a leading ion of 3.5 mM nitrate at pH 3.0 with 0.5 mM indium(III) added as a complexing agent. Use of this electrolyte system with the new separation device allowed chloride samples to be analysed in under 100 s, with a limit of detection (LOD) calculated to be 2.2 mg l−1.

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Journal Article
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Journal of Chromatography A
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06 Jan 2016 10:54
Last Modified:
18 Sep 2023 00:57