Trace Chemistry Section

Trace Chemistry Section

trace chemistry machine

Trace Evidence Collection and Packaging Information

The Trace Chemistry Section of the Crime Laboratory consists of one Forensic Scientist who is responsible for examining the following types of evidence:

  • Analysis of ignitable liquid samples from arson and other cases using GC/MS. Identification of ignitable liquids to an ASTM class, however, this does not include brand identification or identification of a particular ignitable liquid.
  • Analysis of explosives using microscopy, SEM-EDS, FTIR, and GC/MS.
  • Analysis of primer gunshot residue (pGSR) using SEM-EDS.

The following instrumentation may be used to perform the above examinations:

  • Gas Chromatography/Mass Spectrometer (GC/MS)
  • Light Microscope
  • Polarized Light Microscope
  • Fourier Transform Infrared Spectrophotometer (FTIR), both bench and microscope models
  • Scanning Electron Microscope/Energy Dispersive X-ray (SEM-EDS)