Morrissey, J, Larrosa, J and Birkett, JW (2017) A preliminary evaluation of the use of gun bluing to enhance friction ridge detail on cartridge casings. Journal of Forensic Identification, 67 (3).

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Abstract

Friction ridge detail was enhanced on fired and unfired 9mm brass luger ammunition casings using three techniques, two involving Gun Blue reagent at a concentration of 50% v/v. Fingermarks were deposited on a total number of 90 ammunition casings and half were discharged using a Glock 19 semiautomatic pistol. Mark development was achieved using either Superglue Fuming followed by Basic Yellow 40 Fluorescent Dye Staining (SG-BY40), Superglue Fuming followed by Gun Blue (SG-GB), or Gun Blue (GB) as a single process. All three processes developed ridge detail on both fired and unfired casings. The results of this preliminary work show that the use of Gun Blue as a single enhancement technique was able to enhance ridge detail of the highest quality and clarity particularly on fired casings, making it the most effective process.

Item Type:	Article
Uncontrolled Keywords:	0399 Other Chemical Sciences, 0699 Other Biological Sciences, 1801 Law
Subjects:	Q Science > QD Chemistry Q Science > QR Microbiology
Divisions:	Pharmacy & Biomolecular Sciences
Publisher:	International Association for Identification
Date Deposited:	08 Mar 2018 09:13
Last Modified:	04 Sep 2021 10:42
URI:	https://researchonline.ljmu.ac.uk/id/eprint/8218

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