Comparative analysis of smokeless gunpowders by Fourier transform infrared and Raman spectroscopy |
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| Authors: | María López-López Jose Luis Ferrando Carmen García-Ruiz |
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| Institution: | 1. University Institute of Research in Police Sciences, University of Alcalá, Ctra. Madrid-Barcelona Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain;2. Department of Analytical Chemistry, Multipurpose Building of Chemistry, University of Alcalá, Ctra. Madrid-Barcelona Km. 33.600, 28871 Alcalá de Henares, Madrid, Spain;3. Criminalistics Service of Guardia Civil, C/Guzmán el Bueno 110, 28003 Madrid, Spain |
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| Abstract: | Fourier Transform Infrared (FTIR) and Raman spectroscopic techniques were used to perform a comparative study of the spectral profiles of single-base, double-base and triple-base smokeless gunpowders. Preliminary results based on visual comparison of the spectra point out that spectra obtained by both vibrational techniques were useful for a rapid identification of gunpowders containing dinitrotoluene as one of the major components and triple-base gunpowders. Additionally, the Raman spectra of gunpowders with diphenylamine in its primary composition showed a characteristic band, assigned to 2-nitro-diphenylamine, allowing the identification of this type of gunpowders. |
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| Keywords: | Fourier transform infrared spectroscopy Raman spectroscopy Smokeless gunpowders Discriminant analysis |
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