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

Joseph Wang, Martin Pumera

Research output: Contribution to journalArticle

34 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.

Original languageEnglish
Pages (from-to)984-987
Number of pages4
JournalTalanta
Volume69
Issue number4
DOIs
Publication statusPublished - 2006 Jun 15

Fingerprint

Lab-On-A-Chip Devices
Trinitrotoluene
Flow Injection Analysis
Electrochemistry
Mercury amalgams
Microsystems
Mercury
Microfluidics
Sample Size
Limit of Detection
Assays
Detectors
Costs and Cost Analysis
Monitoring
Costs

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

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Microchip flow-injection analysis of trace 2,4,6-trinitrotoluene (TNT) using mercury-amalgam electrochemical detector. / Wang, Joseph; Pumera, Martin.

In: Talanta, Vol. 69, No. 4, 15.06.2006, p. 984-987.

Research output: Contribution to journalArticle

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