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Identification of ANFO: Use of luminescent taggants in post-blast residues
F G M Mauricio1, A Z Pralon2, M Talhavini2
1LIMA, Chemistry Institute, University of Brasília-UnB, P.O. Box 04478, 70904-970 Brasília, Brazil.
Abstract:
This work describes the incorporation of luminescent taggants in cartridges of ammonium nitrate-fuel oil (ANFO) to allow easy identification and collection of post-blast residues. Metal-Organic Frameworks taggants proved to be appropriate for explosive marking when ANFO proportions were above 3.0wt.%. Lanthanide-based light emission enabled in situ retrieval of explosive residues as well as chemical identification, allowing the creation of a coding system using Energy Dispersive Spectroscopy (EDS). The proposed method will accelerate laboratory analysis and support forensic investigations, connecting evidence to suspects and/or to the explosive origin.
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