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Dr. Diaz-Guerra sampling for explosives.

Development of Simulants of Hydrogen Peroxide Based Explosives for use by Canine and IMS Detectors ; José Almirall, FIU.

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Dr. Diaz-Guerra sampling for explosives.

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  1. Development of Simulants of Hydrogen Peroxide Based Explosives for use by Canine and IMS Detectors; José Almirall, FIU • Purpose/ Relevance: Improve the knowledge base for the composition of headspace volatiles from peroxide explosives so that these analytes can be targeted for detection by a number of methods (PSPME-IMS and canines). • Innovation: Current IMS devices do not currently target the volatiles emitted from peroxide explosives. We propose to 1) characterize the odor signatures for a number of peroxide explosives, 2) target their pre-concentration and detection using a simple and inexpensive planar solid phase microextraction (PSPME) device that can be thermally desorbed into existing IMS instrumentation infrastructure and 3) improve the training aids for canine teams to detect peroxide explosives. • This Year outcome: Characterize the headspace composition of the volatiles associated with a number of different peroxides. Develop inexpensive permeation devices that can be used to deliver simulants to be used for canine training aids and instrumentation testing. Determine the limits of detection and optimal parameters for the use of PSPME-IMS for the detection of peroxide explosives. • Long-range impact: Improve the targeting of volatile species that can be associated with the presence of explosives through better understanding of the odor signatures. • Next Year: Improve the performance of the existing PSPME device and suggest guidelines for both training of canines with new simulant kits and the use of PSPME-IMS in field detection of peroxide-based explosives at checkpoints.

  2. Development of Simulants of Hydrogen Peroxide Based Explosives for use by Canine and IMS Detectors; José Almirall, FIU • Education-Former Students:1. Dr. Hanh Lai, currently Research Scientist at Morpho Detection in Boston. 2. Dr. Monica Joshi, currently Assistant Professor at Westchester University in Pennsylvania and 3. Dr. Patricia Diaz-Guerra, currently a Research Associate at Field Forensics, Inc. in Clearwater, FL. • Current Students:Ms. Wen Fan and Ms. Mimy Young • Papers/Patents/Presentations:(publications) Fast Detection of TATP from Headspace using PSPME-IMS, in preparation. (presentations) Dec. 2010, Rapid detection of drugs and explosives using planar solid phase microextraction coupled to ion mobility spectrometry, PACIFICHEM 2010, Honolulu, HI (invited), Oct. 2010, Detection of Drugs and Explosives in Large Volume Headspace Using Planar Microextraction and Ion Mobility Spectrometry, FACSS Meeting, Raleigh, NC (invited). (patents pending) Improvement to SPME-IMS for Detection of Explosives and Drugs using Planar Geometry Fabricated SPME devices • Transition to Industry/Collaboration with Industry: Field Forensics Inc (Clearwater, FL) has licensed our PSPME technology for commercialization. Dr. Diaz-Guerra sampling for explosives.

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