Microchip flow-injection analysis of trace 2,4,6-trinitrotoluene (TNT) using mercury-amalgam electrochemical detector

Joseph Wang, Martin Pumera

    Research output: Contribution to journalArticleResearchpeer-review

    35 Citations (Scopus)

    Abstract

    This paper reports on a microfluidic device for the flow-injection/electrochemistry analysis of nitroaromatic explosive. The response is very fast (150 assays/h), highly sensitive (detection limit 7.0 μg L-1), reproducible and stable (R.S.D. = 2.0%; n = 30) and linear (over 20-100 μg L-1 range). Relevant experimental parameters have been optimized. The new microsystem offers great promise for on-site monitoring of TNT, with significant advantages of speed/warning, sample size, efficiency and cost. Most favorable S/N characteristics were obtained at the Hg/Au-amalgam end-channel detector. © 2005 Elsevier B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)984-987
    JournalTalanta
    Volume69
    Issue number4
    DOIs
    Publication statusPublished - 15 Jun 2006

    Keywords

    • Electrochemistry
    • Explosives
    • Flow-injection analysis
    • Microfluidics

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