Journal
MICROCHEMICAL JOURNAL
Volume 101, Issue -, Pages 49-53Publisher
ELSEVIER
DOI: 10.1016/j.microc.2011.10.004
Keywords
Gunshot residue; Microelectrode; Stripping analysis; Lead
Categories
Funding
- FAPESP (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo) [2006/60078-0]
- CAPES
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
Ask authors/readers for more resources
Electrochemical lead analyses of gunshot residues (GSRs) were performed using an acidic solution with a bare gold microelectrode in the presence of chloride ions. GSRs from four different guns (0.38 in. revolver, 12 caliber pump-action shotgun, 0.38 repeating rifle, and a 0.22 caliber semi-automatic rifle) and six different types of ammunition (CleanRange (R), normal, semi-jacketed, especial 24g (R), 3T (R), CBC (R), and Eley (R)) were analyzed. Results obtained with the proposed methodology were compared with those from an atomic absorption spectrometry analysis, and a paired Student's t-test indicated that there was no significant difference between them at the 95% confidence level. With this methodology, a detection limit of 1.7 nmol L-1 (3 sigma/slope), a linear range between 10 and 100 nmol L-1, and a relative standard deviation of 2.5% from 10 measurements were obtained. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available