Explosives Detection Using Direct Analysis in Real Time (DART) Mass Spectrometry
Explosives Detection Using Direct Analysis in Real Time (DART) Mass Spectrometry
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DOI：
10.1002/prep.200900084
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发表时间：
2010-10-01
影响因子：
1.8
通讯作者：
Durst, H. Dupont
中科院分区：
文献类型：
--
作者：
Nilles, J. Michael;Connell, Theresa R.;Durst, H. Dupont
恐怖分子和犯罪分子越来越多地使用爆炸物，这就需要有一种能够快速分析这些含能化合物的仪器，最好是能在现场进行分析。实时直接分析（DART）是一种很有前途的表面分析技术，几乎不需要或完全不需要样品制备。因此，人们对DART电离技术在检测固体基质和液体基质中的爆炸物方面的应用进行了评估。由于其常用性，选择了15种爆炸物。选择了5种表面来代表广泛的物理性质，如成分、孔隙率、表面形态以及热导率和电导率。此外，这些表面在日常环境中很常见。所有75种化合物 - 表面组合都产生了清晰、易于识别的目标分析物的质谱特征。在这些相同的表面上展示了对5种爆炸物的同时检测。最后，还探索了对常见流体中微量污染物的快速检测。
The growing use of explosives by terrorists and criminals creates a need for instrumentation which can rapidly analyze these energetic compounds, preferably on site. Direct analysis in real time (DART) is a promising technology for surface analysis with little or no sample preparation. Therefore, DART ionization is evaluated for use in detecting explosives on solid substrates and in liquid matrices. Fifteen explosives were chosen as a consequence of their common usage. Five surfaces were chosen to represent a wide range of physical properties such as composition, porosity, surface morphology, and thermal and electrical conductivity. Additionally these surfaces are commonly found in everyday surroundings. All 75 compound-surface combinations produced a clear, easily identifiable, mass spectra characteristic of the targeted analyte. Simultaneous detection of five explosives is demonstrated on these same surfaces. Lastly, rapid detection of trace contamination in common fluids is also explored.