Title
Hierarchical Cluster Analysis of Ignitable Liquids Based on the Total Ion Spectrum
Abbreviated Journal Title
J. Forensic Sci.
Keywords
forensic science; hierarchical cluster analysis; ignitable liquids; total ion spectrum; gas chromatography-mass spectrometry; chemometrics; FIRE DEBRIS ANALYSIS; GAS CHROMATOGRAPHY/MASS SPECTROMETRY; CORRECT; CLASSIFICATION RATES; ARTIFICIAL NEURAL-NETWORKS; GASOLINE; PROGRESS; SAMPLES; Medicine, Legal
Abstract
Gas chromatography-mass spectrometry (GC-MS) data of ignitable liquids in the Ignitable Liquids Reference Collection (ILRC) database were processed to obtain 445 total ion spectra (TIS), that is, average mass spectra across the chromatographic profile. Hierarchical cluster analysis, an unsupervised learning technique, was applied to find features useful for classification of ignitable liquids. A combination of the correlation distance and average linkage was utilized for grouping ignitable liquids with similar chemical composition. This study evaluated whether hierarchical cluster analysis of the TIS would cluster together ignitable liquids of the same ASTM class assignment, as designated in the ILRC database. The ignitable liquids clustered based on their chemical composition, and the ignitable liquids within each cluster were predominantly from one ASTM E1618-11 class. These results reinforce use of the TIS as a tool to aid in forensic fire debris analysis.
Journal Title
Journal of Forensic Sciences
Volume
59
Issue/Number
5
Publication Date
1-1-2014
Document Type
Article
Language
English
First Page
1198
Last Page
1204
WOS Identifier
ISSN
0022-1198
Recommended Citation
"Hierarchical Cluster Analysis of Ignitable Liquids Based on the Total Ion Spectrum" (2014). Faculty Bibliography 2010s. 6239.
https://stars.library.ucf.edu/facultybib2010/6239
Comments
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