Laser induced breakdown spectroscopy as a tool for discrimination of glass for forensic applications

Materials analysis and characterization can provide important information as evidence in legal proceedings. The potential of laser induced breakdown spectroscopy (LIBS) for the discrimination of glass fragments for forensic applications is presented here. The proposed method is based on the fact tha...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2008-07, Vol.391 (5), p.1961-1968
Main Authors: Rodriguez-Celis, E. M, Gornushkin, I. B, Heitmann, U. M, Almirall, J. R, Smith, B. W, Winefordner, J. D, Omenetto, N
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Correlation analysis
Food Science
Forensic
glass
Laboratory Medicine
Laser induced breakdown spectroscopy
material identification
Monitoring/Environmental Analysis
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Summary:Materials analysis and characterization can provide important information as evidence in legal proceedings. The potential of laser induced breakdown spectroscopy (LIBS) for the discrimination of glass fragments for forensic applications is presented here. The proposed method is based on the fact that glass materials can be characterized by their unique spectral fingerprint. Taking advantage of the multielement detection capability and minimal to no sample preparation of LIBS, we compared glass spectra from car windows using linear and rank correlation methods. Linear correlation combined with the use of a spectral mask, which eliminates some high-intensity emission lines from the major elements present in glass, provides effective identification and discrimination at a 95% confidence level.
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-008-2104-y