Abstract:
:A simple method using purge-and-trap gas chromatography/mass spectrometry (P&T-GC/MS) for forensic examination of oil stains was studied. Carboxylic acids, chosen as target components for discrimination of oil samples, were extracted from stains with ether, methyl esterified by tetramethylammonium hydroxide, and analyzed by P&T-GC/MS. Vegetable oils were discriminated according to their carboxylic acid compositions. Carboxylic acid composition was independent of the substrate material of the stain. Although the carboxylic acid composition of the oil changed on exposure to sunlight, identification of oil was possible for oil stains that had been in the shade, if analysis was made within 20 days.
journal_name
J Forensic Scijournal_title
Journal of forensic sciencesauthors
Ehara Y,Sakamoto K,Marumo Ykeywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
1462-9issue
6eissn
0022-1198issn
1556-4029journal_volume
46pub_type
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