ANYL 291 |
| This work aims to develop a fast method to confirm trace levels of high explosives using fast-gas chromatography-mass spectrometry (fast-GC-MS). This is a continuation of previous work, which used fast-GC coupled with a pulsed-discharge electron capture detector (PDECD) to separate a mixture of nine explosives, including nitrate esters, nitroaromatics and a nitramine in less than 2.5 minutes. However, the PDECD cannot be used to confirm a compound's identity; therefore mass spectrometry must be used. The proposed improvements involve modifying the scanning parameters of a quadrupole ion-trap-mass spectrometer (QIT-MS) (Finnigan Polaris Q, Thermo Electron, Austin, TX) to obtain faster scanning rates and to incorporate the new method of collision-induced dissociation during mass acquisition for tandem MS on the timescale required for fast-GC. This presentation will discuss the advantages and disadvantages of using a fast-mass-scanning QIT-MS as a potential detection method for fast confirmatory analyses. |
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Analytical Approaches: Mass Spectrometry
1:30 PM-4:20 PM, Wednesday, 13 September 2006 Moscone Center -- Room 124, Oral
Division of Analytical Chemistry |