The analysis of forensic samples using laser micro-pyrolysis gas chromatography mass spectrometry

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Show simple item record Armitage, S Saywell, S Roux, C Lennard, C Greenwood, P 2009-12-21T02:28:43Z 2001
dc.identifier.citation Journal of Forensic Sciences, 2001, 46 (5), pp. 1043 - 1052
dc.identifier.issn 0022-1198
dc.identifier.other C1 en_US
dc.description.abstract Laser micropyrolysis gas chromatography-mass spectrometry is used for the analysis of paint, photocopier toner, and synthetic fiber materials to test the forensic potential of this emerging technology. It uses a laser microprobe to selectively target very small parts of the materials for GC-MS analysis. Whereas the paint and the toner samples were amenable to direct laser pyrolysis, the synthetic fibers proved transparent to the 1064 nm laser radiation. The difficulty with the fibers demonstrates that a specific laser wavelength may not be appropriate for all types of materials. Nevertheless, the fibers were able to be indirectly pyrolyzed by impregnation in a strongly absorbing graphite matrix. A vast array of hydrocarbon pyrolysates was detected from the different materials studied. Unique product distributions were detected from each sample and in sufficient detail to facilitate individual molecular characterization (i.e., molecular fingerprinting). The integrity of the laser data were confirmed by comparison to data obtained from the same samples by the more conventional pyroprobe pyrolysis GC-MS method. The high spatial resolution and selectivity of the laser method may be advantageous for specific forensic applications, however, further work may be required to improve the reproducibility of the data.
dc.language eng
dc.title The analysis of forensic samples using laser micro-pyrolysis gas chromatography mass spectrometry
dc.type Journal Article
dc.parent Journal of Forensic Sciences
dc.journal.volume 5
dc.journal.volume 46
dc.journal.number 5 en_US
dc.publocation Pennsylvania, USA en_US
dc.identifier.startpage 1043 en_US
dc.identifier.endpage 1052 en_US SCI.Chemistry and Forensic Sciences en_US
dc.conference Verified OK en_US
dc.for 0699 Other Biological Sciences
dc.for 0399 Other Chemical Sciences
dc.personcode 0000016451
dc.personcode 960382
dc.percentage 95 en_US Other Chemical Sciences en_US
dc.classification.type FOR-08 en_US
dc.description.keywords Forensic science
dc.description.keywords Gas chromatography
dc.description.keywords Laser
dc.description.keywords Mass spectrometry
dc.description.keywords Paint
dc.description.keywords Photocopier toner
dc.description.keywords Pyrolysis
dc.description.keywords Synthetic fibers
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/Strength - Forensic Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)

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