Determination of chlorine containing species in explosive residues using chip-based isotachophoresis

Bernard Treves Brown, Jeff E. Prest, Matthew S. Beardah, Sara J. Baldock, Sean P. Doyle, Peter R. Fielden, Nicholas J. Goddard, Bernard J Treves Brown

    Research output: Contribution to journalArticlepeer-review


    A new method has been developed to allow the determination of the chlorate, chloride and perchlorate anions in inorganic explosive residues to be made using isotachophoresis (ITP). To enable a good separation of these species to be achieved the method involves the use of two complexing agents. Indium(III) is used to allow the determination of chloride whilst using nitrate as the leading ion and α-cyclodextrin is used to allow the separation of chlorate and perchlorate. Separations were carried out using a miniaturised poly(methyl methacrylate) (PMMA) separation device. The method was applied to analysing both model samples and actual inorganic explosive containing residue samples. Successful determinations of these samples were achieved with no interference from other anions typically found in inorganic explosive residues. Limits of detection (LOD) for the species of interest were calculated to be 0.80 mg l-1 for chloride, 1.75 mg l-1 for chlorate and 1.40 mg l-1 for perchlorate. Crown Copyright © 2008.
    Original languageEnglish
    Pages (from-to)157-163
    Number of pages6
    JournalJournal of Chromatography A
    Issue number1-2
    Publication statusPublished - 27 Jun 2008


    • Explosive residues
    • Inorganic anions
    • Isotachophoresis
    • Miniaturisation


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