Study of chemical modifications in acidified ignitable liquids analysed by GC-MS
Identifiers
Permanent link (URI): http://hdl.handle.net/10017/50169DOI: 10.1016/j.scijus.2015.06.006
ISSN: 1355-0306
Date
2015-12Affiliation
Universidad de Alcalá. Departamento de Química Analítica, Química Física e Ingeniería QuímicaBibliographic citation
Science and Justice - Journal of the Forensic Science Society, 2015, v. 55, n. 6, p. 446-455
Keywords
Acidified ignitable liquid
Diesel fuel
Fire investigation
Gasoline
Improvised incendiary device
Molotov cocktail.
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
© Elsevier, 2015
Access rights
info:eu-repo/semantics/openAccess
Abstract
In this work, mixtures of gasoline with sulphuric acid and diesel fuel with sulphuric acid were analysed by gas chromatography&-mass spectrometry (GC&-MS). The results showed considerable qualitative and semi-quantitative modifications in the chromatographic profiles of the ignitable liquids (ILs). In the case of acidified gasoline, the alteration of the abundances of aromatic compounds and the hydrolysis of an oxygenated compound such as methyl tert-butyl ether (MTBE), in addition to the immediate and unexpected appearance of tert-butylated compounds were observed. In the case of acidified diesel fuel, the alteration of aromatic compounds occurred. These sequential changes were then studied in detail in order to explain the chemical modifications taking place. These extensive chemical modifications may be considered as a new chromatographic profile distortion effect, the acidification of ILs. As such modifications are not generally taken into account in the criteria followed to assess the classification of an IL, we propose some recommendations helping to the identification of acidified ILs. This information can be especially useful to detect and identify non-burned ILs from seized or failed improvised incendiary devices made with mixtures of sulphuric acid&-IL, or ILs altered intentionally with the aim to modify their composition.
Files in this item
Files | Size | Format |
|
---|---|---|---|
Study_Martin_SciJust_2015.pdf | 613.2Kb |
|
Files | Size | Format |
|
---|---|---|---|
Study_Martin_SciJust_2015.pdf | 613.2Kb |
|
Collections
- QUANING - Artículos [367]