Laser induced breakdown spectroscopy as a tool for discrimination of glass for forensic applications |
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| Authors: | E M Rodriguez-Celis I B Gornushkin U M Heitmann J R Almirall B W Smith J D Winefordner N Omenetto |
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| Institution: | (1) Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL 32611, USA;(2) Department of Interface Spectroscopy, ISAS–Institute for Analytical Sciences, Albert-Einstein-Str. 9, 12489 Berlin, Germany;(3) Department of Chemistry and Biochemistry, Florida International University, University Park, Miami, FL 33199, USA |
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| Abstract: | 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. |
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| Keywords: | Glass Forensic Laser induced breakdown spectroscopy Correlation analysis Material identification |
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