Name and briefly describe two popular approaches for collecting gunshot residue from a suspect's hands. What is the logical next step in analysis for these collected samples?

What will be an ideal response?


Answer should include points such as the following:
• The most popular approach to collecting gunshot residues from a shooter's hands involves applying adhesive tape or adhesive to the hand's surface to remove any adhering residue particles.
• Another approach is to remove any residues present by swabbing both the firing and nonfiring hands with cotton that has been moistened with 5 percent nitric acid. The front and back of each hand are separately swabbed. All four swabs, along with a moistened control, are then forwarded to the crime laboratory for analysis.
The most specific analysis method for these collected samples is by SEM coupled with an X-ray analyzer to determine elemental components of the residue.

Criminal Justice

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