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A new quantitative method for gunshot residue analysis by ion beam analysis.

Christopher, ME, Warmenhoeven, JW, Romolo, FS, Donghi, M, Webb, RP, Jeynes, C, Ward, NI, Kirkby, KJ and Bailey, MJ (2013) A new quantitative method for gunshot residue analysis by ion beam analysis. Analyst. pp. 4649-4655.

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Abstract

Imaging and analyzing gunshot residue (GSR) particles using the scanning electron microscope equipped with an energy dispersive X-ray spectrometer (SEM-EDS) is a standard technique that can provide important forensic evidence, but the discrimination power of this technique is limited due to low sensitivity to trace elements and difficulties in obtaining quantitative results from small particles. A new, faster method using a scanning proton microbeam and Particle Induced X-ray Emission (μ-PIXE), together with Elastic Backscattering Spectrometry (EBS) is presented for the non-destructive, quantitative analysis of the elemental composition of single GSR particles. In this study, the GSR particles were all Pb, Ba, Sb. The precision of the method is assessed. The grouping behaviour of different makes of ammunition is determined using multivariate analysis. The protocol correctly groups the cartridges studied here, with a confidence >99%, irrespective of the firearm or population of particles selected.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
AuthorsEmailORCID
Christopher, MEUNSPECIFIEDUNSPECIFIED
Warmenhoeven, JWUNSPECIFIEDUNSPECIFIED
Romolo, FSUNSPECIFIEDUNSPECIFIED
Donghi, MUNSPECIFIEDUNSPECIFIED
Webb, RPUNSPECIFIEDUNSPECIFIED
Jeynes, CUNSPECIFIEDUNSPECIFIED
Ward, NIUNSPECIFIEDUNSPECIFIED
Kirkby, KJUNSPECIFIEDUNSPECIFIED
Bailey, MJUNSPECIFIEDUNSPECIFIED
Date : 18 June 2013
Identification Number : 10.1039/c3an00597f
Related URLs :
Additional Information : This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Depositing User : Symplectic Elements
Date Deposited : 29 May 2014 13:36
Last Modified : 16 Aug 2014 01:33
URI: http://epubs.surrey.ac.uk/id/eprint/795094

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