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Published on: October 2, 2016
Raman hyperspectral imaging in conjunction with independent component analysis as a forensic tool for explosive
Mariana Ramos Almeida1, Lucio Paulo Lima Logrado2, Jorge Jardim Zacca2
1Institute of Chemistry, University of Campinas, 13084-971 Campinas, SP, Brazil.
Abstract:
In this work, Raman hyperspectral imaging, in conjunction with independent component analysis, was employed as an analytical methodology to detect an ammonium nitrate fuel oil (ANFO) explosive in banknotes after an ATM explosion experiment. The proposed methodology allows for the identification of the ANFO explosive without sample preparation or destroying the sample, at quantities as small as 70μgcm-2. The explosive was identified following ICA data decomposition by the characteristic nitrate band at 1044cm-1. The use of Raman hyperspectral imaging and independent component analysis shows great potential for identifying forensic samples by providing chemical and spatial information.
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