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- Title
Using 1,2-Indanedione-Zinc Chloride to Visualize Areas for Touch DNA Collection.
- Authors
Galinsky, Kara; Garcia, Tiffany; Springer, Eliot
- Abstract
When processing evidence for touch DNA, either at the crime scene or in a laboratory setting, it is important to determine areas that are most likely to contain the suspect's skin cells. In some cases, when it is difficult to recreate the events of the crime (e.g., when there are no witnesses), one may find it challenging to determine where to sample. This article discusses using the reagent 1,2-indanedione-zinc chloride (IND-ZnCl2) to locate areas that have been touched. A total of 216 hand-grab samples were collected on fabric samples (cotton denim, cotton-polyester blend denim, cotton, and polyester), which were then processed with IND-ZnCl2, both with and without heat and humidity. Nearly 86% of the samples resulted in developing areas of f luorescence. Either in the lab or at the crime scene, this approach provides a more precise location on which to focus for the collection of touch DNA.
- Subjects
DNA; CRIME laboratories; CRIME scenes; CHLORIDES; COLLECTIONS
- Publication
Journal of Forensic Identification, 2020, Vol 70, Issue 2, p245
- ISSN
0895-173X
- Publication type
Article