Department of Chemistry, Temple University, Philadelphia, PA 19122, USA.
Rapid Commun Mass Spectrom. 2010 Jun 15;24(11):1659-64. doi: 10.1002/rcm.4566.
Mass analysis is demonstrated for the detection of sub-microgram quantities of explosive samples on a metallic surface at atmospheric pressure using laser electrospray mass spectrometry (LEMS). A non-resonant femtosecond duration laser pulse vaporizes native samples for subsequent electrospray ionization and transfer into a time-of-flight mass spectrometer. LEMS was used to detect 2,3-dimethyl-2,3-dinitrobutane (DMNB), 1,3,5-trinitroperhydro-1,3,5-triazine (RDX), 3,4,8,9,12,13-hexaoxa-1,6-diazabicyclo[4.4.4]tetradecane (HMTD), and 3,3,6,6,9,9-hexamethyl-1,2,4,5,7,8-hexaoxacyclononane (TATP) deposited on a steel surface. LEMS was also used to directly analyze composite propellant materials containing an explosive to determine the molecular composition of the explosive pellets at atmospheric pressure.
利用激光电喷雾质谱（LEMS），在大气压下对金属表面上的亚微克级爆炸物样本进行质量分析。非共振飞秒持续时间的激光脉冲将原生样本蒸发，随后进行电喷雾电离并转移到飞行时间质谱仪中。LEMS 用于检测 2,3-二甲基-2,3-二硝基丁烷（DMNB）、1,3,5-三硝基六氢-1,3,5-三嗪（RDX）、3,4,8,9,12,13-六氧杂-1,6-二氮杂双环[4.4.4]十四烷（HMTD）和 3,3,6,6,9,9-六甲基-1,2,4,5,7,8-六氧杂环壬烷（TATP）沉积在钢表面上。LEMS 还用于直接分析含有爆炸物的复合推进剂材料，以确定大气压下爆炸颗粒的分子组成。
