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Collecting and Recovering Evidence of Explosions

Collecting and Recovering Evidence of Explosions. Forensic Investigation of Explosives. Ion Mobility Spectrometer. A portable Ion mobility spectrometer is used to rapidly detect and identify trace quantities of explosives. Ion Mobility Spectrometer.

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Collecting and Recovering Evidence of Explosions

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  1. Collecting and Recovering Evidence of Explosions Forensic Investigation of Explosives Sanders

  2. Ion Mobility Spectrometer • A portable Ion mobility spectrometer is used to rapidly detect and identify trace quantities of explosives. Unit 14: Explosives

  3. Ion Mobility Spectrometer Ion-mobility spectrometry is an analytical technique used to separate and identify ionized molecules in the gas phase based on their mobility in a carrier buffer gas. Unit 14: Explosives

  4. Collection and Packaging • The entire bomb site must be systematically searched to recover any trace of a detonating mechanism or any other item that is foreign to the explosion site. Unit 14: Explosives

  5. Crime Scene • Objects located at or near the origin of the explosion must be collected for laboratory examination. Unit 14: Explosives

  6. Common Explosive • The most obvious characteristic of an explosive is the presence of a crater at the origin of the blast. • high explosive • contained low explosive Unit 14: Explosives

  7. Packaging • All materials collected at bombing scenes must be placed in airtight containers. Unit 14: Explosives

  8. Examination of Debris • Debris collected at explosions is examined microscopically for explosive particles. Unit 14: Explosives

  9. Sensitivity in Explosives • Recovered debris may be thoroughly rinsed with organic solvents and analyzed by testing procedures that include • Color spot tests • Thin layer chromatography • Gas chromatography • Mass spectrometry Unit 14: Explosives

  10. Unconsumed Explosives • Unconsumed explosives are identified by either infrared spectrophotometry or X-ray diffraction. Unit 14: Explosives

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