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2 Central European Journal of Energetic Materials

2 2005

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Application of LC-MSD and GC-ECD Techniques in the Analysis of Post-explosion Residues of Explosives with Content of 1,3,5-Trinitroso-1,3,5-triazinane

100%

Varga R. , Zeman S. , Vágenknecht J. , Koložvári M.

tom Vol. 2, nr 3

85-96

The paper deals with possible applications of the connection of liquid chromatography with atmospheric pressure chemical ionization (APCI) mass spectrometry (Agilent 1100 series LS-MSD system) and gas chromatography with electron capture detector (GC-ECD) in the analysis of some common available or improvised explosives. The analysis of selected types of individual explosives, 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitroso-1,3,5-triazinane (TMTA) and analysis of their mixtures (TNT/TMTA and RDX/TMTA) in their post-explosion residues on the basis of generated characteristic mass spectra by using LC-MSD system is the aim of this work. Post-explosion analysis of TMTA and its explosive mixtures can be similarly complicated, like that of the well-known plastic explosive on the basis of pentaerythritol tetranitrate, Semtex-1A.

Study of Thermal and Detonation Reactivities of the Mixtures Containing 1,3,5-Trinitroso-1,3,5-triazinane (TMTA)

100%

Zeman S. , Varga R.

tom Vol. 2, nr 4

77-88

Thermal reactivities of 1,3,5-trinitroso-1,3,5-triazinane (TmTa), 1,3,5-trinitro-1,3,5-triazinane (RDX), 2,4,6-trinitrotoluene (TNT), TNT/TmTa and RDX/TmTa mixtures and mixtures of 1,3,5-trinitrobenzene (TNB) with TmTa and TMTA/RDX were specified by means of differential thermal analysis with outputs evaluation by the Kissinger method. The reactivities, expressed as Ea R-1 slopes of Kissinger relationship, correlate with squares of detonation velocities of the corresponding explosive samples in the sense of modified Evans-Polanyi-Semenov equation. Taking this fact it is stated that initiation of detonation of the mixtures with TMTA content proceeds through primarily fission of the TMTA molecule. If an ionic mechanism dominantly participates on thermal decomposition of some studied mixtures then resulting Ea R-1values do not correlate in the sense of the equation. This is the case of the TNT/TmTa mixtures where TNT has acidic character toward TmTa. also in TNB/TmTa/RDX mixture might react amine intermediates of TmTa thermal decomposition with RDX by ionic mechanism.