Detection and classification of explosive compounds utilizing laser ion mobility spectrometry

Langmeier, A.; Heep, W.; Oberhuettinger, C.; Oberpriller, Helmut; Kessler, M.; Goebel, J.; Mueller, Gerhard O. W.

doi:10.1117/12.820856

Cited by 3 publications

(1 citation statement)

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“…Langmeier et al performed the detection of TNT and HMX with a new laser ion mobility spectrometer (LIMS); detection limits were 1 ng for TNT and about 20 ng for HMX [ 130 ]. The analysis of desorption curves allowed additional spectral features to be extracted, which could be used to distinguish substances with a similar drift time.…”

Section: Ion Mobility Spectroscopy (Ims)mentioning

confidence: 99%

Recent Developments in Spectroscopic Techniques for the Detection of Explosives

et al. 2018

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Trace detection of explosives has been an ongoing challenge for decades and has become one of several critical problems in defense science; public safety; and global counter-terrorism. As a result, there is a growing interest in employing a wide variety of approaches to detect trace explosive residues. Spectroscopy-based techniques play an irreplaceable role for the detection of energetic substances due to the advantages of rapid, automatic, and non-contact. The present work provides a comprehensive review of the advances made over the past few years in the fields of the applications of terahertz (THz) spectroscopy; laser-induced breakdown spectroscopy (LIBS), Raman spectroscopy; and ion mobility spectrometry (IMS) for trace explosives detection. Furthermore, the advantages and limitations of various spectroscopy-based detection techniques are summarized. Finally, the future development for the detection of explosives is discussed.

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Section: Ion Mobility Spectroscopy (Ims)mentioning

confidence: 99%

Recent Developments in Spectroscopic Techniques for the Detection of Explosives

et al. 2018

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Development of an ion mobility spectrometer with UV ionization source to detect ketones and BTX

Guo

et al. 2014

SPIE Proceedings

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Application of laser photofragmentation-resonance enhanced multiphoton ionization to ion mobility spectrometry

et al. 2010

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We demonstrate detection of nitro-containing compounds with laser photofragmentation (PF) coupled with resonance enhanced multiphoton ionization (REMPI) and ion mobility spectrometry (IMS). In PF-REMPI, a laser dissociates the parent molecules, producing fragments that can then be ionized by absorption of additional laser photons. The production of these ions strongly depends on the wavelength of laser light, with ion yields corresponding to the absorption spectrum of the fragments [nitric oxide (NO) in the present case]. Combining IMS with PF-REMPI provides further specificity, separating ions according to their mobilities through an atmospheric-pressure drift tube. In this work, we use a pulsed UV laser to examine the characteristics of atmospheric-pressure PF-REMPI, the chemistry occurring in the ionization region and drift tube, and the viability of detecting ions created by both resonance-enhanced and nonresonant ionization. Probing NO in a helium-nitrogen bath, we demonstrate that the detection of ions displays single-shot response to changes in ion generation, with an ion extraction-to-collection efficiency of approximately 12%. We then evaluate the sensitivity and specificity of PF-REMPI/IMS as applied to the detection of both the explosive surrogate 2, 4-dinitrotoluene and the nuisance compound nitrobenzene.

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Detection and classification of explosive compounds utilizing laser ion mobility spectrometry

Cited by 3 publications

References 0 publications

Recent Developments in Spectroscopic Techniques for the Detection of Explosives

Recent Developments in Spectroscopic Techniques for the Detection of Explosives

Development of an ion mobility spectrometer with UV ionization source to detect ketones and BTX

Application of laser photofragmentation-resonance enhanced multiphoton ionization to ion mobility spectrometry

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