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Updated: Feb 20, 2026

Quantitative Detection of Trace Explosive Vapors by Programmed Temperature Desorption Gas Chromatography-Electron Capture Detector
Published on: July 25, 2014
Laser ion mobility spectrometry in the detection of ultra-low quantities of explosives
A E Akmalov1, A A Chistyakov1, G E Kotkovskii1
11 Micro- and Nanosystems Department, National Research Nuclear University, Moscow Engineering Physics Institute, Moscow, Russia.
Abstract:
The paper presents the results of research and development of ion mobility spectrometer with laser ion sources for detecting ultra-low quantities of explosives in air. Particular attention is paid to the mechanisms of the formation of negative ions. It is shown that laser ionization with respect to ion mobility spectrometry provides an increase of sensitivity and selectivity of detection. The ion mobility spectra of the most common nitro explosives are investigated. The detection threshold for laser ion mobility spectrometer was reached at the level of 10-14 g/cm3 (for trinitrotoluene).
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