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首页> 外文会议>NATO Advanced Research Workshop on Vapour and Trace Detection of Explosives for Anti-Terrorism Purposes; 20030319-20; Moscow(RU) >DETECTION OF EXPLOSIVES RESIDUES ON AIRCRAFT BOARDING PASSES
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DETECTION OF EXPLOSIVES RESIDUES ON AIRCRAFT BOARDING PASSES

机译：检测飞机登机牌上的炸药残留

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摘要

A prototype system for the detection of trace explosives residues on aircraft boarding passes has been developed. The desorption of explosives from the passes was achieved using short wave infrared radiation. The vapours produced were drawn into a triple quadrupole tandem mass spectrometer and were monitored in SRM mode. The infrared unit integrated with the tandem mass spectrometer has demonstrated limits of detection of less than 100 pg for the explosives studied (TNT, NG, PETN and RDX). A background study into the levels of explosives residues on used boarding passes was conducted by analysing over 20,000 boarding passes from a number of airports in England, America and Canada. Traces of explosives were detected on approximately 0.5% of passes analysed. Nitroglycerine contributed to the majority of the positive signals observed. All the signals observed were below 1ng. An automated unit has been developed after the success of the manual feed system, which incorporated the inclusion of a transport mechanism to move the boarding cards through the desorption window automatically. The desorption efficiency of the system was found to be between 70% and 100%, depending on the thickness of the card used for assessment. The unit was able to handle a throughput rate of 1000 boarding passes per hour and was able to detect between 10pg and 50pg of explosives residue from the surface of the card depending on the compound used.
机译：已经开发出用于检测飞机登机牌上的微量爆炸物残留的原型系统。使用短波红外辐射可以实现炸药从通道中的解吸。将产生的蒸气吸入三重四极杆串联质谱仪中，并在SRM模式下进行监控。与串联质谱仪集成的红外装置已证明对所研究的炸药（TNT，NG，PETN和RDX）的检出限小于100 pg。通过分析英格兰，美国和加拿大多个机场的20,000多个登机牌，对二手登机牌上的爆炸物残留量进行了背景研究。在分析的大约0.5％的通行证中检测到爆炸物的痕迹。硝酸甘油有助于观察到的大多数阳性信号。观察到的所有信号均低于1ng。在手动进纸系统成功之后，已经开发出了一个自动装置，该装置结合了运输机制，可以使登机牌自动通过解吸窗。发现系统的解吸效率在70％至100％之间，具体取决于用于评估的卡片的厚度。该装置每小时可以处理1000次登机通行率，并且可以根据所使用的化合物从卡表面检测出10pg至50pg的爆炸物残留。

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