The Effect of Humidity and Dopants on the Detection of TNT Vapor by Differential Ion Mobility Spectrometry (DMS)

• Autorzy: Karpińska Monika , Pawłowski Wojciech , Zalewska Anna

Identyfikatory

DOI

10.22211/cejem/193820

• Języki publikacji: EN

Abstrakty

EN

The aim of this study was to investigate the effect of an external factor, i.e. humidity, on the detectability of TNT vapor by Differential Ion Mobility Spectrometry (DMS). The values of TNT signal amplitude and asymmetric voltage were measured as a function of relative air humidity. The influence of the use of a semi-permeable membrane and the additive agent - dopant (nicotine and dichloromethane) on the detection under varying air humidity conditions was also investigated. The analysis of the obtained results confirms that the introduction of dopant to the analyzed stream contributes to the change of TNT detection parameters. The DMS detector allows you to observe the signal in two polarizations (positive and negative), which is an advantage compared to the competitive FAIMS method. It was observed that water vapor content above 30% causes the formation of two analytical signals for TNT. This, in turn, may improve the identification process. The addition of nicotine and dichloromethane reduces the amplitude of the air signal, which has a beneficial effect on TNT detection.

Słowa kluczowe

EN

differential ion mobility spectrometry; DMS; explosives; trinitrotoluene; effect of humidity; dopants; nicotine; dichloromethane

• Wydawca: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2024
• Tom: Vol. 21, no. 3
• Strony: 298--319
• Opis fizyczny: Bibliogr. 31 poz., rys.

Twórcy

autor

Karpińska Monika

• Military Institute of Chemistry and Radiometry, 105 gen. A. Chruściela „Montera” Av., 00-910 Warsaw, Poland

autor

Pawłowski Wojciech

• Department of High-Energetic Materials, Faculty of Chemistry, Warsaw University of Technology, 3 Noakowskiego Street, 00-664 Warsaw, Poland

autor

Zalewska Anna

• The Polish Chamber of Chemical Industry, 17 Jana i Jędrzeja Śniadeckich Street, 00-654 Warsaw, Poland

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