Journal
IEEE SENSORS JOURNAL
Volume 19, Issue 19, Pages 8556-8562Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2019.2922170
Keywords
Explosives; polyacrylamide gel; electrochemical gas sensor
Funding
- Rangsit University
- Office of the Higher Education Commission, Military Research and Development
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In Thailand, most of the bomb devices produced by the terrorists use trinitrotoluene (TNT) as the main explosive material. Detecting TNT and preventing detonation could save many civilians. Due to its low vapor pressure, TNT requires an extremely high sensitivity method for detection. In this paper, we propose an application of the polyacrylamide gel as an electrochemical gas sensor for explosive material detection. Cyclic voltammetry signals were collected from samples, including TNT, pentaerythritol tetranitrate (PETN), and non-explosive vapors. It was found that a time-derivative calculation of the signal was unique to each chemical, rather than the signal itself, demonstrating utility for the detection of explosive material. This approach for making a gel-based sensor and the data analysis looks promising and requires further validation.
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