Fire debris analysis by Raman spectroscopy and chemometrics

Gonzalez-Rodriguez, Jose, Sisons, Natalie and Robinson, Sally (2011) Fire debris analysis by Raman spectroscopy and chemometrics. Journal of Analytical and Applied Pyrolysis, 91 (1). pp. 210-218. ISSN 0165-2370

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Fire debris analysis by Raman spectroscopy and chemometrics
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A paper reporting the use of Raman Spectroscopy in fire debris analysis is presented. Five polymer based samples, namely carpet (polypropylene), nylon stockings (nylon), foam packaging (polystyrene), CD cases (polystyrene) and DVD cases (polypropylene) were burnt with each one of the following ignitable liquids: petrol, diesel, kerosene and ethanol. Raman shifts were obtained and, in some cases, peaks were identified to correspond to pyrolysis products in the form of alkanes, aromatic or polyaromatic compounds. All pyrolysis peaks were used to produce a Principal Component Analysis (PCA) of the burned samples with the different ignitable liquids. The change in the Raman spectra made it possible to identify some of the pyrolysis products produced in the combustion and also to identify the different plastic materials in fire debris, even when different fuels have been used and the chemical and structural identity of the plastic has been altered in the fire.

Keywords:Fire debris, Raman Spectroscopy, Pyrolysis Products, Principal Component Analysis, Chemometrics, Forensic Science, Multivariate Analysis, Fire, material analysis, plastics, ignitable liquids
Subjects:F Physical Sciences > F200 Materials Science
F Physical Sciences > F110 Applied Chemistry
F Physical Sciences > F100 Chemistry
F Physical Sciences > F410 Forensic Science
F Physical Sciences > F180 Analytical Chemistry
Divisions:College of Science > School of Life Sciences
ID Code:4542
Deposited On:16 Jun 2011 05:51

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