The growing threat of terrorism has triggered an urgent need to find effective ways to improve the analysis of explosives. This will aid forensic scientists in analysing the post-blast debris, which in turn helps the law enforcement agencies to frame suitable regulations. Analysis of post-blast debris is challenging as it hosts a massive amount of complexity. There are various techniques reported till date such as mass spectrometry, gas chromatography, high-performance liquid chromatography, Fourier transform infrared spectroscopy, and Raman spectroscopy for the analysis of post-blast residues. However, none of them has been able to identify the structural composition of the explosives. The current research study focuses on identifying the structural composition of the explosives from the post-blast debris using the nuclear magnetic resonance (NMR) technology. The post-blast analytes were extracted from soil samples, cleaned by the solid phase extraction (SPE) method and were rapidly analysed by the nuclear magnetic resonance spectrometer. This paper reports the identification of nitro organic explosives such as pentaerythritol tetranitrate (PETN), trinitrotoluene (TNT) and 2,4,6-trinitrophenylmethylnitramine (tetryl) in post-blast debris by 400 MHz nuclear magnetic resonance spectrometer.

恐怖主义威胁日益严重，因此迫切需要寻找有效方法来改进对爆炸物的分析。这将帮助法医科学家分析爆炸后的碎片，进而帮助执法机构制定适当的法规。爆炸后碎片的分析具有很大的复杂性，因此具有挑战性。迄今为止，已报道了用于分析爆炸后残留物的各种技术，例如质谱法，气相色谱法，高效液相色谱法，傅立叶变换红外光谱法和拉曼光谱法。但是，他们都没有能够确定炸药的结构组成。当前的研究重点是使用核磁共振（NMR）技术从爆炸后的碎片中识别爆炸物的结构成分。爆炸后的分析物是从土壤样品中提取的，通过固相萃取（SPE）方法清洗的，并通过核磁共振波谱仪进行快速分析。本文报道了通过400 MHz核磁共振波谱仪鉴定爆炸后碎片中的硝基有机炸药，如季戊四醇季戊四醇（PETN），三硝基甲苯（TNT）和2,4,6-三硝基苯基甲基硝胺（tetryl）。