期刊
FORENSIC SCIENCE INTERNATIONAL
卷 206, 期 1-3, 页码 150-154出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.forsciint.2010.07.031
关键词
Arson; Gasoline; Activated charcoal; Hands; Forensic sciences; GC-MS
An arson suspect's contact with an ignitable liquid container can leave small traces of the substance on his hands, but detecting these traces is difficult. This research paper presents a method to obtain clear gasoline detection even 3 h after hands have been moistened with 50 mu L of gasoline using activated charcoal strips to adsorb the ignitable liquid traces directly from the suspect's hands. Light heating of the hands to 45 degrees C significantly increases the ability to detect gasoline traces. This methodology is part of a system to sample a suspect's hands at the scene of crime or in a police station. Samples are taken by investigators then analyzed in a laboratory. The suggested method provides an important improvement in detection sensitivity for ignitable liquids on suspect's hands. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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