Laser mass spectrometry for high sensitive and multi-component analysis of exhaust gas from vehicles  

作　　者：Liandi Zhang Jie Wei Haiyang Zheng Ziyao Li Zhuhong Xia Xuejun Gu Bin Zhang 

机构地区：[1]Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Laser Spect, Hefei 230031, Peoples R China

出　　处：《Chinese Science Bulletin》2001年第1期86-88,共3页

摘　　要：Laser mass spectrometry is a newly developed method for pollutant detection. It combines resonance-enhanced multiphoton ionization (REMPI) and time-of-flight mass spectro- metry (TOF-MS). It may detect pollutants with high sensitivity, high selectivity and in a multi-component way. In this note, laser mass spectrometry was used to detect the pollutants in exhaust gases from vehicles. With one-color REMPI (at 266 nm), several aromatic hydrocarbons, including benzene, toluene, xylene, C3-benzene, etc., were detected. These substances were selectively ionized by (1+1) REMPI and their mass resolution was detected by a TOF mass spectrometer. And a quantitative analysis was achieved.Laser mass spectrometry is a newly developed method for pollutant detection. It combines resonance-enhanced multiphoton ionization (REMPI) and time-of-flight mass spectrometry (TOF-MS). It may detect pollutants with high sensitivity, high selectivity and in a multi-component way. In this note, laser mass spectrometry was used to detect the pollutants in exhaust gases from vehicles. With one-color REMPI (at 266 nm), several aromatic hydrocarbons, including benzene, toluene, xylene, C3-benzene, etc., were detected. These substances were selectively ionized by (1+1) REMPI and their mass resolution was detected by a TOE mass spectrometer. And a quantitative analysis was achieved.

关 键 词：laser MASS SPECTROMETRY REMPI TOF-MS aromatics. 

分 类 号：TN247[电子电信—物理电子学]