Analysis of explosives using chemical ionization mass spectroscopy |
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| Affiliation: | 1. Chemistry Department, Physical Chemistry Division, Lomonosov Moscow State University, 1–3 Leninskie Gory, 119991 Moscow, Russian Federation;2. Australian Centre for Research on Separation Science, University of Tasmania, Hobart, Tasmania 7001, Australia |
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| Abstract: | Methane chemical ionization (MeCI) mass spectra of several explosives, including nitrate esters, nitramines, nitroaromatics, and stabilizers, are presented. The predominance of the pseudomolecular ion (M+H)+ greatly facilitates identification of these temperature-sensitive compounds. Structural effects and mechanistic pathways rationalizing formation of the major ions are included. Gas chromatographic (GC) separation of selected explosive formulations are shown. GC chemical ionization mass spectra response factors for ethylene glycol dinitrate, nitroglycerin, 2,4-dinitrotoluene, and 2,4,6-trinitrotoluene show nanogram sensitivity of this technique. |
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