Journal
FORENSIC SCIENCE INTERNATIONAL
Volume 232, Issue 1-3, Pages 169-172Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.forsciint.2013.07.009
Keywords
Forensic science; Electrical tape; Backing; X-ray fluorescence spectrometry; Elemental composition; Discriminating power
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Funding
- Fundamental Research Funds for the Central State Agency (The Construction of Physical Testing and Chemical Analysis Database for Adhesive Tape Evidence) [2012JB006]
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The aim of this study was to analyze and discriminate electrical tapes using the wavelength dispersive X-ray fluorescence (XRF) spectrometry and statistical techniques. The backings of 46 white electrical tapes were analyzed. A discrimination of 90.4% was performed only by quantitative analysis of major elements (relative ratio of Cl to Ca). Ten distinct groups with a discrimination of 78.9% were yielded only by qualitative analysis of trace elements. Ninety-nine electrical tape pairs which could not be discriminated by major elements were further compared with the characteristics of trace elements. The overall discriminating power of 96.1% was obtained by the combination of quantitative and qualitative analysis. The ability of XRF technique to discriminate different electrical tapes was similar to several well-known methods combined. Crown Copyright (C) 2013 Published by Elsevier Ireland Ltd. All rights reserved.
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