IN SITU EXPLOSIVE DETECTION USING A MINIATURE PLASMA ION SOURCE AND A PORTABLE MASS SPECTROMETER
IN SITU EXPLOSIVE DETECTION USING A MINIATURE PLASMA ION SOURCE AND A PORTABLE MASS SPECTROMETER
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DOI：
10.1080/00032719.2012.675485
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发表时间：
2012-01-01
影响因子：
2
通讯作者：
Cooks, R. Graham
中科院分区：
文献类型：
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作者：
Dalgleish, Jon K.;Hou, Keyong;Cooks, R. Graham
将一个小型低温等离子体(LTP)电离探头耦合到便携式质谱仪上，用于快速检测表面痕量爆炸物。仅用一个小型隔膜泵向LTP源提供环境空气，在玻璃上不到1分钟就能检测到100 ng的四硝酸季戊四醇(PETN)、1，3，5-三硝基-1，3，5-三嗪(RDX)和2，4，6-三硝基苯基甲基硝胺(Tetryl)。这些分子(M)的主要离子信号是[M+NO3](-)物种。虽然仍有许多优化之处，但相信这种微型LTP源将不再需要外部气瓶和额外的加热，以便使用便携式质谱仪进行现场爆炸物检测。
A small low-temperature plasma (LTP) ionization probe was coupled to a portable mass spectrometer for the rapid detection of trace explosives on surfaces. Using only a small diaphragm pump to supply ambient air to the LTP source, 100 ng each of pentaerythritol tetranitrate (PETN), 1,3,5-trinitroperhydro-1,3,5-triazine (RDX), and 2,4,6-trinitrophenylmethylnitramine (Tetryl) were detectable on glass in under 1 minute. The main ion signal from these molecules (M) is the [M+NO3](-) species. While much optimization remains, it is believed that this miniature LTP source will remove the need for external gas cylinders and additional heating for in situ explosives detection using portable mass spectrometers.