Progressing the analysis of Improvised Explosive Devices: Comparative study for trace detection of explosive residues in handprints by Raman spectroscopy and liquid chromatography

TALANTA

卷:161

Article

Zapata, Felix^1,2  Fernandez de la Ossa, Ma Angeles^1,2  Gilchrist, Elizabeth^3,4  Barron, Leon³  Garcia-Ruiz, Carmen^1,2 

[1] Univ Alcala, Dept Analyt Chem Phys Chem & Chem Engn, Inquifor Res Grp, Ctra Madrid Barcelona Km 33-600, Madrid 28871, Spain

[2] Univ Alcala, Univ Inst Res Police Sci IUICP, Ctra Madrid Barcelona Km 33-600, Madrid 28871, Spain

[3] Kings Coll London, Dept Pharm & Forens Sci, Analyt & Environm Sci Div, Franklin Wilkins Bldg,150 Stamford St, London SE1 9NH, England

[4] Univ Coll Cork, Dept Chem, Coll Rd, Cork, Ireland

关键词: Improvised Explosive Devices (IEDs);    Handprints;    Black powder;    Dynamite;    Raman spectroscopy;    Liquid chromatography;   

DOI  :  10.1016/j.talanta.2016.05.057

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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