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NCJRS Abstract

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NCJ Number: 182673 Find in a Library
Title: Analysis and Comparison of Bullet Leads by Inductively-Coupled Plasma Mass Spectrometry
Journal: Journal of Forensic Sciences  Volume:44  Issue:5  Dated:September 1999  Pages:1020-1026
Author(s): Raymond O. Keto MFS
Editor(s): R. E. Gaensslen Ph.D.
Date Published: 1999
Page Count: 7
Type: Report (Technical)
Format: Article
Language: English
Country: United States of America
Annotation: Inductively coupled plasma mass spectrometry (ICPMS) was used to determine eight elements in 9-mm bullet lead from 12 manufacturers.
Abstract: Purposes were twofold: to develop a feasible ICPMS method for bullet lead analysis and to observe the range of variability in elemental compositions for bullet lead from diverse sources. The first purpose was significantly aided by a reduction of the lead concentration by precipitation, while the second purpose was demonstrated by the application of numerical correlation analyses to the data. Results showed good reproducibility and sensitivity were obtained. No bullets from different sources had similar elemental signatures, whereas very different signatures could be found within a single box of bullets. Numerical criteria were developed to separate matching bullets from all different source bullets for the subject population. 22 references, 6 tables, and 5 figures
Main Term(s): Criminology
Index Term(s): Ammunition; Ballistics; Criminal investigation; Criminalistics; Evidence identification; Firearms identification; Forensic sciences; Mass spectroscopy; Weapons identification
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