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Optimization of gas chromatography/vacuum ultraviolet (GC/VUV) spectroscopy for explosive compounds and application to post-blast debris
Forensic Chemistry ( IF 2.6 ) Pub Date : 2021-09-13 , DOI: 10.1016/j.forc.2021.100362
Courtney A. Cruse 1 , John V. Goodpaster 1, 2
Affiliation  

A statistical optimization of gas chromatography/vacuum ultraviolet spectroscopy (GC/VUV) for the analysis of explosives has yet to be presented. In this work, a central composite design of experiments was utilized to optimize GC/VUV parameters for explosive and explosive related compounds such as triacetone triperoxide (TATP), dimethyldinitrobutane (DMNB), nitroglycerine (NG), diphenylamine (DPA), 2,4,6-trinitrotoluene (TNT), pentaerythritol tetranitrate (PETN), and cyclonite (RDX). Parameters optimized include the final temperature of a ramped multimode inlet program (200 °C), GC carrier gas flow rate (1.9 mL/min), and VUV make-up gas pressure (0.00 psi). The impact of transfer line/flow cell temperature was determined not to be statistically significant. Post-blast debris was successfully analyzed to illustrate applicability to forensic analysis of explosives. Relevant compounds in single- and double-base smokeless powders were successfully identified in post-blast fragments originating from PVC and steel pipes.



中文翻译:

爆炸性化合物的气相色谱/真空紫外 (GC/VUV) 光谱优化及其在爆炸后碎片中的应用

用于分析爆炸物的气相色谱/真空紫外光谱 (GC/VUV) 的统计优化尚未提出。在这项工作中,利用实验的中心复合设计来优化爆炸物和爆炸物相关化合物的 GC/VUV 参数,例如三过氧化三丙酮 (TATP)、二甲基二硝基丁烷 (DMNB)、硝化甘油 (NG)、二苯胺 (DPA)、2,4 ,6-三硝基甲苯 (TNT)、季戊四醇四硝酸酯 (PETN) 和旋风除尘器 (RDX)。优化的参数包括斜坡多模式进样口程序的最终温度 (200 °C)、GC 载气流速 (1.9 mL/min) 和 VUV 尾吹气压力 (0.00 psi)。传输线/流通池温度的影响经确定无统计学意义。成功地分析了爆炸后的碎片,以说明爆炸物法医分析的适用性。在源自 PVC 和钢管的爆炸后碎片中成功鉴定出单基和双基无烟火药中的相关化合物。

更新日期:2021-09-16
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