Development of fingermark on the surface of fired cartridge casing using amino acid sensitive reagents: Change of viewpoint
- Authors
- Hong, Sungwook; Han, Aleum
- Issue Date
- Sep-2016
- Publisher
- Elsevier BV
- Keywords
- Ninhydrin-L-alanine; 5-MTN-L-alanine; Fingermarks; Fired cartridge casings; Trace metal detection
- Citation
- Forensic Science International, v.266, pp 86 - 90
- Pages
- 5
- Journal Title
- Forensic Science International
- Volume
- 266
- Start Page
- 86
- End Page
- 90
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/8793
- DOI
- 10.1016/j.forsciint.2016.05.010
- ISSN
- 0379-0738
1872-6283
- Abstract
- Four amino acid sensitive fingermark enhancement reagents (ninhydrin, 5-methylthioninhydrin (5-MTN), 1,8-diazafloren-9-one (DFO), 1,2-indandione (1,2-IND) were used for the development of fingermark on the surface of brass. The reagents were used for the detection of a trace amount of metallic ion on the surface of cartridge casings to develop latent fingermarks. Ninhydrin-L-alanine (NIN-ALA), 5-MTN-L-alanine (MTN-ALA), DFO-L-alanine (DFO-ALA), 1,2-IND-L-alanine (IND-ALA) complexes were prepared and applied to the fired cartridge casings, for the further enhancement of fingermarks developed by corrosion on the surface of brass. Of the four complexes, NIN-ALA and MTN-ALA complexes induced color changes to enhance fingermarks on fired cartridge casings, but photoluminescence was not observed. About 31% of cartridge casings treated with MTN-ALA showed enhanced fingermarks. DFO-ALA and IND-ALA did not show any enhancement of fingermarks. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
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