Chemical fingerprinting of unevaporated automotive gasoline samples

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Show simple item record Sandercock, PM Du Pasquier, E 2009-08-20T13:01:31Z 2003-01
dc.identifier.citation Forensic Science International, 2003, 134 (1), pp. 1 - 10
dc.identifier.issn 0379-0738
dc.identifier.other C1 en_US
dc.description.abstract The comparison of two or more samples of liquid gasoline (petrol) to establish a common origin is a difficult problem in the forensic investigation of arsons and suspicious fires. A total of 35 randomly collected samples of unevaporated gasoline, covering three different grades (regular unleaded, premium unleaded and lead replacement), were examined. The high-boiling fraction of the gasoline was targeted with a view to apply the techniques described herein to evaporated gasoline samples in the future. A novel micro solid phase extraction (SPE) technique using activated alumina was developed to isolate the polar compounds and the polycyclic aromatic hydrocarbons (PAHs) from a 200 ?l sample of gasoline. Samples were analysed using full-scan gas chromatographymass spectrometry (GCMS) and potential target compounds identified. Samples were then re-analysed directly, without prior treatment, using GCMS in selected ion monitoring (SIM) mode for target compounds that exhibited variation between gasoline samples. Principal component analysis (PCA) was applied to the chromatographic data. The first two principal components (PCs) accounted for 91.5% of the variation in the data. Linear discriminant analysis (LDA) performed on the PCA results showed that the 35 samples tested could be classified into 32 different groups.
dc.publisher Elsevier Sci Ireland Ltd
dc.relation.isbasedon 10.1016/S0379-0738(03)00081-1
dc.title Chemical fingerprinting of unevaporated automotive gasoline samples
dc.type Journal Article
dc.parent Forensic Science International
dc.journal.volume 1
dc.journal.volume 134
dc.journal.number 1 en_US
dc.publocation Clare, Ireland en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 10 en_US Science en_US
dc.personcode 0000016852
dc.description.keywords chemical fingerprinting, liquid gasoline, unevaporated automotive samples, GC-MS, PCACapillary Gas-chromatography
dc.description.keywords Elution Adsorption Chromatography
dc.description.keywords Mass-spectrometric Analysis
dc.description.keywords Aromatic-hydrocarbons
dc.description.keywords Crude Oils
dc.description.keywords Petroleum-products
dc.description.keywords Retention Indexes
dc.description.keywords O
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of Chemistry and Forensic Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)

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