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Author Question: Despite some shortcomings, experiments remain the most effective means of gathering data. ... (Read 106 times)

fox

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on: Aug 17, 2018
Despite some shortcomings, experiments remain the most effective means of gathering data.
 
  Indicate whether the statement is true or false

Question 2

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?
Criminalistics: An Introduction to Forensic Science ¦ Saferstein ¦ 12th Edition
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Moriaki

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Reply #1 on: Aug 17, 2018
Answer to Question 1

F

Answer to Question 2

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.


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fox

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Reply #2 on: Aug 17, 2018
Thank you!


Moriaki

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Reply #3 on: Aug 17, 2018
Always glad to help...


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