Rapid analysis of trace pollutants using laser mass spectrometry

作     者：魏杰 章莲蒂 顾学军 张冰 孔祥和 郑海洋 夏柱红 

作者机构：1. Laboratotry of Laser Spectroscopy Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences 230031 Hefei China 

出 版 物：《Science China Mathematics》 (中国科学：数学（英文版）)

年 卷 期：2001年第44卷第7期

页      面：940-946页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

基　　金：Wei Jie wishes to thank Prof. U. Boesl in Munich Technical University for the discussion with him about the design of the mobile laser mass spectrometer 

主　　题：Laser mass spectrometry Pollutant detection Aromatic hydrocarbons REMPI TOF-MS 

摘      要：Organic pollution has been gaining more and more ***,at present the determination of virtually all of them,including polycyclic aromatic carbons (PAHs),the largest single class of chemical carcinogens known today,is made via pre-purification and *** major problems are complexity and time-consuming,thus,no ideal real-time on-line monitoring can be *** mass spectrometry combines UV spectroscopy and time-of-flight mass spectrometry (TOF-MS) through resonance-enhanced multiphoton ionization (REMPI).It is characteristic of high sensitivity,high selectivity and *** this paper,after its principles,a small mobile laser mass spectrometer,in which a mini-excimer (KrF,248 nm) laser was used,is ***-time analysis of vehicle exhaust gas was made using this instrument,and the results showed some advantages over traditional methods:multicomponent detection,including benzene,toluene,xylene,C3-benzene,naphthalene,and methyl-naphthalene; high sensitivity (100 ppb);high time-resolution (0.1 s);and no need for pre-purification or pre-concentration of samples.