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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A forensic study: Lead determination in gunshot residues

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Author(s):
Salles, Maiara O. [1] ; Naozuka, Juliana [2] ; Bertotti, Mauro [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo - Brazil
[2] Univ Fed Sao Paulo, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Microchemical Journal; v. 101, p. 49-53, MAR 2012.
Web of Science Citations: 7
Abstract

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. (AU)