NDLI: Pyrolysis products of linear alkylbenzenes--implications in fire debris analysis.

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Pyrolysis products of linear alkylbenzenes--implications in fire debris analysis.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Contreras, Patricia A. Houck, Stephen S. Davis, William M. Yu, Jorn C-C
Description	Country affiliation: United States Author Affiliation: Contreras PA ( College of Criminal Justice, Sam Houston State University, 1003 Bowers Blvd., Huntsville, TX 77341, USA.)
Abstract	In this case report, potential interferences from an improvised fire-extinguishing agent, a dishwashing liquid, containing linear alkylbenzene sulfonates (LAS), was studied. The presence of linear alkylbenzenes (LABs) in the fire debris sample was identified from the summed ion profile (SIP) analysis. It was found that the LAS from dishwashing liquids produce LABs by thermal degradation. Direct pyrolysis of a LAS-containing dishwashing liquid at 300°C yielded a distribution of LABs in the SIP. LABs began to break down at pyrolysis temperatures between 450 and 500°C and completely break down by 800°C. Observed pyrolysis breakdown products of LABs included toluene, ethylbenzene, meta-, para-, and ortho-xylenes, propylbenzene, indane, naphthalene, and 1- and 2-methylnaphthalenes. These data suggested the presence of LABs in fire debris evidence might complicate subsequent analysis because their breakdown products contained some of the target compounds common to ignitable liquid identification. Therefore, a positive determination of the presence of foreign ignitable liquids should be carefully evaluated when there is a presence of LABs in the SIP.
File Format	HTM / HTML
ISSN	00221198
Issue Number	1
Journal	Journal of Forensic Sciences
Volume Number	58
e-ISSN	15564029
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2013-01-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Forensic Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Pathology and Forensic Medicine

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