期刊
TALANTA
卷 161, 期 -, 页码 219-227出版社
ELSEVIER
DOI: 10.1016/j.talanta.2016.05.057
关键词
Improvised Explosive Devices (IEDs); Handprints; Black powder; Dynamite; Raman spectroscopy; Liquid chromatography
资金
- Prevention of and Fight against Crime Programme from the European Commission - Directorate-General Home Affairs [HOME/2011/ISEC/AG/4000002480]
- University of Alcala [CGG2013/EXP-021]
- King's Continuation Scholarship
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. (C) 2016 Elsevier B.V. All rights reserved.
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