分析化学Issue(7)：1017-1021,5.DOI:10.11895/j.issn.0253-3820.140042
丙酮增强的真空紫外光电离负离子质谱快速检测爆炸物
Acetone-Enhanced Negative Vacuum Ultraviolet Photoionization Mass Spectrometry for Rapid Detection of Explosives
摘要
Abstract
In this article, an acetone-enhanced negative photoionization (AENP) source based on a 10. 6 eV vacuum ultraviolet ( VUV) lamp was developed and coupled to a home-made time-of-flight mass spectrometer for rapid detection of trace explosives. In the AENP source, acetone molecules absorbed 10. 6 eV photons and were ionized by single photon ionization to emit photoelectrons. The photoelectrons reacted with O2 , CO2 , etc. in the atmosphere to produce mainly CO-3 negative reactant ions. With this ionization source, common explosives, N-nitrobiz ( 2-hyolorolroxy ethyl )-amine dinitrate ( DINA ) , Tetryl, trinitrotoluene ( TNT ) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), could be detected sensitively, and the limit of detection of 2 pg ( TNT) with a linear range of 3 orders of magnitude was achieved. The simple structure, high sensitivity characteristics make the AENP source as a promising ionization source for mass spectrometry.关键词
丙酮增强/负离子光电离源/爆炸物/飞行时间质谱/真空紫外灯Key words
Acetone-enhanced/Negative photoionization/Explosives/Time-of-flight mass spectrometry/Vacuum ultraviolet lamp引用本文复制引用
窦健,花磊,侯可勇,蒋蕾,程沙沙,齐国臣,李庆运,田地,李海洋..丙酮增强的真空紫外光电离负离子质谱快速检测爆炸物[J].分析化学,2014,(7):1017-1021,5.基金项目
本文系国家重大仪器专项资助项目(No.2011YQ05006904) （No.2011YQ05006904）
