Accession Number : ADA468495


Title :   Characterization Of Commonly Encountered Explosives Using Highfield Asymmetric Waveform Ion Mobility Spectrometry Coupled With Mass Spectrometry


Descriptive Note : Master's thesis


Corporate Author : FLORIDA UNIV GAINESVILLE


Personal Author(s) : Boock, Jared J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a468495.pdf


Report Date : May 2007


Pagination or Media Count : 97


Abstract : The goal of this research was to characterize explosive compounds using high-field asymmetric waveform ion mobility spectrometry (FAIMS) as an ion separation device interface to a mass spectrometer (MS). FAIMS is a relatively recently developed technology that is promising adding a dimension of separation. This method was employed in such a way as to be conducive to possible future development of field instruments (e.g., use of atmospheric pressure chemical ionization (APCI)). In addition, several experiments were conducted with the application of this method, mainly dealing with optimization of the instrument parameters. These experiments led to the development of a new method: high-resolution FAIMS. An ion mobility spectrometer was used as a desolvation and ion focusing device to drastically improve FAIMS resolution. This allowed for the separation of mixtures that otherwise could not have been separated. The resolution was high enough that isomers of the same explosive were successfully resolved. This can be beneficial to forensics studies.


Descriptors :   *WAVEFORMS , *EXPLOSIVES , *MASS SPECTROMETRY , IONS , MOBILITY , IONIZATION , MASS SPECTROMETERS , FIELD EQUIPMENT , BAROMETRIC PRESSURE , SEPARATION , ASYMMETRY , THESES , PARAMETERS


Subject Categories : Ammunition and Explosives
      Nuclear Physics & Elementary Particle Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE