Rapid screening of explosives in ambient environment by aerodynamic assisted thermo desorption mass spectrometry

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• 作者：Qiang Zhao ; Jianli Liu ; Bo Wang ; Xiaohua Zhang ; Guangyan Huang and Wei Xu
• 刊名：Journal of Mass Spectrometry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：52
• 期：1
• 页码：1-6
• 全文大小：442K
• ISSN：1096-9888c

文摘

Rapid, direct, and trace detection of explosives in an open environment is of particular need in homeland and/or transportation security. In this work, an aerodynamic assisted thermo desorption mass spectrometry method was developed for the direct quantitative analyses of explosives from a distance. Remote non-volatile explosive sensing was achieved for 2, 4, 6-trinitrotoluene, trinitrohexahydro-1, 3, 5-triazine, 8701 (main ingredient: RDX 98.5%), and C4 (a type of plastic explosive) with a distance of 0.65 m. Furthermore, a close to 324 cm² effective sampling area could be achieved, and the limits of detection are in the ng range. This device can be deployed in airports and subway stations for high-throughput and automatic luggage/personnel screening of prohibited articles, such as explosives and illicit drugs. Copyright