Journal
ANALYTICAL CHEMISTRY
Volume 78, Issue 11, Pages 3807-3814Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac060190h
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The application of single photon ionization in combination with mass-selective detection by time-of-flight mass spectrometry is described for the rapid detection of the nitro-containing explosives and explosives-related compounds nitrobenzene, 1,3-dinitrobenzene, o-nitrotoluene, 2,4-dinitrotoluene, and 2,4,6-trinitrotoluene, as well as the peroxide-based explosive triacetone triperoxide in the gas phase. The technique is demonstrated to be a plausible approach for laser-based rapid detection of explosives. The limits of detection for nitrobenzene and 2,4-dinitrotoluene using SPI were also measured and determined to be 17-24 (S/N similar to 2: 1) and similar to 40 ppb (S/N similar to 2: 1), respectively.
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