Chemical fingerprinting of unevaporated automotive gasoline samples

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dc.contributor.author Sandercock, M. en_US
dc.contributor.author Du Pasquier, E. en_US
dc.date.accessioned 2009-08-20T13:01:31Z
dc.date.available 2009-08-20T13:01:31Z
dc.date.issued 2003 en_US
dc.identifier 2003000324 en_US
dc.identifier.citation Sandercock, M. and Du Pasquier, E. 2003 'Chemical fingerprinting of unevaporated automotive gasoline samples', Forensic Science International, vol. 134, no. 1, pp. 1-10. en_US
dc.identifier.issn 0379-0738 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/919
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 JlI sample of gasoline. Samples were analysed using full-scan gas chromatography-mass spectrometry (GC-MS) and potential target compounds identified. Samples were then re-analysed directly, without prior treatment, using GC-MS 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. en_US
dc.publisher Elsevier Sci Ireland Ltd en_US
dc.relation.isbasedon http://dx.doi.org/10.1016/S0379-0738(03)00081-1 en_US
dc.title Chemical fingerprinting of unevaporated automotive gasoline samples en_US
dc.parent Forensic Science International en_US
dc.journal.volume 134 en_US
dc.journal.number 1 en_US
dc.publocation Clare, Ireland en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 10 en_US
dc.cauo.name Science en_US


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