Analysis of the headspace composition of smokeless powders using GC–MS, GC-μECD and ion mobility spectrometry Monica Joshi, Kia Rigsby, Jose R. Almirall

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Presentation transcript:

Analysis of the headspace composition of smokeless powders using GC–MS, GC-μECD and ion mobility spectrometry Monica Joshi, Kia Rigsby, Jose R. Almirall Forensic Science International Volume 208, Issue 1, Pages 29-36 (May 2011) DOI: 10.1016/j.forsciint.2010.10.024 Copyright © 2010 Elsevier Ireland Ltd Terms and Conditions

Fig. 1 Overall distribution of additives detected by headspace GC–MS analysis (N=65 smokeless powders on the y-axis). Forensic Science International 2011 208, 29-36DOI: (10.1016/j.forsciint.2010.10.024) Copyright © 2010 Elsevier Ireland Ltd Terms and Conditions

Fig. 2 Itemiser II IMS plasmagrams: (A) nitroglycerin in negative mode, (B) ethylphenylamine in positive mode, (C) dibutyl phthalate in positive mode, (D) diethyl phthalate in positive mode, (E) methyl centralite in positive mode and (F) N-nitrosodiphenylamine in positive mode. Forensic Science International 2011 208, 29-36DOI: (10.1016/j.forsciint.2010.10.024) Copyright © 2010 Elsevier Ireland Ltd Terms and Conditions

Fig. 3 Composition profiles generated by 60min SPME depicting the variation in the headspace composition of the various Hodgdon powders studied with the limits of detection of each of the compounds listed in the legend (N=22). (A) SPME–GC–MS profiles and (B) SPME–IMS profiles. Forensic Science International 2011 208, 29-36DOI: (10.1016/j.forsciint.2010.10.024) Copyright © 2010 Elsevier Ireland Ltd Terms and Conditions

Fig. 4 Extraction profiles of smokeless powders: (A) SPME–GC–MS of Hodgdon 450 powder plotted as mass extracted vs. time, (B) Hodgdon 450 powder SPME–IMS profile in both IMS modes (positive and negative), (C) SPME–GC–MS of Norma Magnum Rifle powder plotted as mass extracted vs. time and (D) Norma Magnum Rifle SPME–IMS profile in both IMS modes. Forensic Science International 2011 208, 29-36DOI: (10.1016/j.forsciint.2010.10.024) Copyright © 2010 Elsevier Ireland Ltd Terms and Conditions