Progressing the analysis of Improvised Explosive Devices: Comparative study for trace detection of explosive residues in handprints by Raman spectroscopy and liquid chromatography
Autores
Zapata Arráez, Félix; Fernández de la Ossa, María de los Ángeles; Gilchrist, E.; Barron, L; García Ruiz, CarmenIdentificadores
Enlace permanente (URI): http://hdl.handle.net/10017/40713DOI: 10.1016/j.talanta.2016.05.057
ISSN: 0039-9140
Fecha de publicación
2016-08-02Filiación
Universidad de Alcalá. Departamento de Química Analítica, Química Física e Ingeniería QuímicaCita bibliográfica
Talanta, 2016, v. 161, p. 219-227
Palabras clave
Improvised explosive devices (IEDs)
handprints
black powder
dynamite
Raman spectroscopy
liquid chromatography
Proyectos
HOME/2011/ISEC/AG/4000002480 (European Commission)
CGG2013/EXP-021 (Universidad de Alcalá)
Tipo de documento
info:eu-repo/semantics/article
Versión
info:eu-repo/semantics/publishedVersion
Derechos
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
© Elsevier 2016
Derechos de acceso
info:eu-repo/semantics/openAccess
Resumen
Concerning the dreadful global threat of terrorist attacks, the detection of explosive residues in biological traces and marks is a current need in both forensics and homeland security. This study examines the potential of Raman microscopy in comparison to liquid chromatography (ion chromatography (IC) and reversed-phase high performance liquid chromatography (RP-HPLC)) to detect, identify and quantify residues in human handmarks of explosives and energetic salts commonly used to manufacture Improvised Explosive Devices (IEDs) including dynamite, ammonium nitrate, single- and double-smokeless gunpowders and black powder. Dynamite, ammonium nitrate and black powder were detected through the identification of the energetic salts by Raman spectroscopy, their respective anions by IC, and organic components by RP-HPLC. Smokeless gunpowders were not detected, either by Raman spectroscopy or the two liquid chromatography techniques. Several aspects of handprint collection, sample treatment and a critical comparison of the identification of compounds by both techniques are discussed. Raman microscopy and liquid chromatography were shown to be complementary to one another offering more comprehensive information for trace explosives analysis.
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