RT info:eu-repo/semantics/article
T1 Study of Spectral Modifications in Acidified Ignitable Liquids by Attenuated Total Reflection Fourier Transform Infrared Spectroscopy
A1 Martín Alberca, Carlos
A1 Ortega Ojeda, Fernando Ernesto
A1 García Ruiz, Carmen
K1 Attenuated total reflection Fourier transform infrared spectroscopy
K1 ATR FT-IR
K1 Acidified ignitable liquid
K1 Chemical ignition, Molotov cocktail
K1 Chemometrics
K1 Fire debris
K1 Gasoline.
K1 Química
K1 Chemistry
AB In this work, the spectral characteristics of two types of acidified gasoline and acidified diesel fuel are discussed. Neat and acidified ignitable liquids (ILs) infrared absorption spectra obtained by attenuated total reflection Fourier transform infrared spectroscopy were compared in order to identify the modifications produced by the reaction of the ILs with sulfuric acid. Several bands crucial for gasoline identification were modified, and new bands appeared over the reaction time. In the case of acidified diesel fuel, no significant modifications were observed. Additionally, the neat and acidified ILs spectra were used to perform a principal components analysis in order to confirm objectively the results. The complete discrimination among samples was successfully achieved, including the complete differentiation among gasoline types. Taking into account the results obtained in this work, it is possible to propose spectral fingerprints for the identification of non-burned acidified ILs in forensic investigations related with arson or the use of improvised incendiary devices (IIDs).
SN 0003-7028
YR 2016
FD 2016-03
LK http://hdl.handle.net/10017/50061
UL http://hdl.handle.net/10017/50061
LA eng
DS MINDS@UW
RD 19-abr-2024