NCJ Number
231228
Journal
Journal of Forensic Sciences Volume: 55 Issue: 3 Dated: May 2010 Pages: 753-756
Date Published
May 2010
Length
4 pages
Annotation
The collection efficiency of two widely used gunshot residue (GSR) collection techniquescarbon-coated adhesive stubs and alcohol swabshas been compared by counting the number of characteristic GSR particles collected from the firing hand of a shooter after firing one round.
Abstract
Samples were analyzed with both scanning electron microscopy and energy dispersive X-rays by an experienced GSR analyst, and the number of particles on each sample containing Pb, Ba, and Sb counted. The adhesive stubs showed a greater collection efficiency as all 24 samples gave positive results for GSR particles whereas the swabs gave only positive results for half of the 24 samples. Results showed a statistically significant collection efficiency for the stub collection method and likely reasons for this are considered. 6 figures, 1 table and 9 references (Published Abstract)