期刊
ANALYTICAL CHEMISTRY
卷 83, 期 18, 页码 7115-7122出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac2014299
关键词
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资金
- National Science Foundation [CHE-0518497, CHE0957694]
- Office of Naval Research [N00014-10-0293]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0957694] Funding Source: National Science Foundation
The mass spectral detection of low vapor pressure, inorganic-based explosive signatures including ammonium nitrate, chlorate, perchlorate, sugar, and the constituents contained within black powder are reported using laser electrospray mass spectrometry. The ambient pressure mass spectrometry technique combining nonresonant, femtosecond laser vaporization with electrospray postionization revealed primary and secondary signatures for trace quantities of inorganic explosives. A mixture of complexation agents in the electrospray solvent enabled the simultaneous detection of vaporized cations, anions, and neutrals in a single measurement. An offline classifier discriminated the inorganic-based explosives based on the mass spectral signatures resulting in high fidelity identification.
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