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首页> 外文期刊>Talanta: The International Journal of Pure and Applied Analytical Chemistry >Progressing the analysis of Improvised Explosive Devices: Comparative study for trace detection of explosive residues in handprints by Raman spectroscopy and liquid chromatography
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Progressing the analysis of Improvised Explosive Devices: Comparative study for trace detection of explosive residues in handprints by Raman spectroscopy and liquid chromatography

机译：改进简易爆炸装置的分析：通过拉曼光谱和液相色谱法痕迹检测手印中爆炸残留物的比较研究

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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.
机译：关于恐怖袭击的可怕全球威胁，法医和国土安全目前都需要发现生物痕迹和标记中的爆炸性残留物。与液相色谱法（离子色谱法（IC）和反相高效液相色谱法（RP-HPLC））相比，这项研究检验了拉曼显微镜在检测，鉴定和定量人类常用炸药和高能盐中的残留物的潜力。制造简易炸药（IED），包括炸药，硝酸铵，单，双无烟火药和黑火药。通过拉曼光谱法鉴定高能盐，通过IC鉴定它们各自的阴离子以及通过RP-HPLC鉴定有机物，可检测出炸药，硝酸铵和黑色粉末。通过拉曼光谱法或两种液相色谱技术均未检测到无烟火药。讨论了手印收集，样品处理以及通过两种技术鉴定化合物的关键比较方面的几个方面。拉曼显微镜和液相色谱显示彼此互补，为痕量炸药分析提供了更全面的信息。 （C）2016 Elsevier B.V.保留所有权利。

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