Magnetic Field Enhanced Photoelectron Ionization Source Portable TOF-MS and Its Application in Analysis of Volatile Reduced Sulfur Compounds | |
Li Jin-Xu1; Hou Ke-Yong2; Zhao Wu-Duo2; Chen Wen-Dong2,3; Jiang Ji-Chun2,3; Liu Wei2,3; Li Qing-Yun1; Tian Di1; Li Hai-Yang1 | |
刊名 | chinese journal of analytical chemistry
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2015-03-01 | |
卷号 | 43期号:3页码:444-450 |
关键词 | Volatile reduced sulfur compounds Magnetic field enhanced photoelectron ionization Portable time-of-flight mass spectrometer Online monitoring |
英文摘要 | reduced sulfur compounds (rscs) are one of the main pollutant species in the atmosphere, so it is of great significance to develop a rapid and on. line approaches for their detection. in this study, a portable time. of. flight mass spectrometer (tof-ms) with magnetic field enhanced photoelectron ionization source was designed to detect rscs. the photoelectron ionization source was induced from vacuum ultraviolet photons which generated from vacuum ultraviolet (vuv) lamp with energy of 10. 6 ev. the energy of photoelectrons was controlled by adjusting the extraction voltage to produce the photoelectron ionization, and an annular magnet was used in the ionization region to improve the ionization efficiency of photoelectrons. from the simulation result by simion software, it was found that the introduction of magnet field made the motion trajectroies of electrons in the helical motion increase and the convergence of electron at the ionization source was achieved. experimental results showed that after introducing the magnet filed, the sensitivity of h2s, so2 and cs2 was improved by a factor of 5. 3, 9. 4 and 6. 9, respectively. with a detection time of 50 s, the limits of detection for h2s, so2 and cs2 were 0. 14, 0. 52 and 0. 31 mg/m(3)(s/n = 3), respectively. it could be concluded that the portable tof. ms with magnetic field enhanced photoelectron ionization source has great potential to be applied for on. line monitoring of volatile sulfides at the emission source. |
WOS标题词 | science & technology ; physical sciences |
类目[WOS] | chemistry, analytical |
研究领域[WOS] | chemistry |
关键词[WOS] | single-photon ionization ; electron-impact ionization ; flight mass-spectrometry ; vacuum-ultraviolet lamp ; system ; dioxide |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000354901600017 |
公开日期 | 2016-05-09 |
内容类型 | 期刊论文 |
源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146251] ![]() |
专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
作者单位 | 1.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Li Jin-Xu,Hou Ke-Yong,Zhao Wu-Duo,et al. Magnetic Field Enhanced Photoelectron Ionization Source Portable TOF-MS and Its Application in Analysis of Volatile Reduced Sulfur Compounds[J]. chinese journal of analytical chemistry,2015,43(3):444-450. |
APA | Li Jin-Xu.,Hou Ke-Yong.,Zhao Wu-Duo.,Chen Wen-Dong.,Jiang Ji-Chun.,...&Li Hai-Yang.(2015).Magnetic Field Enhanced Photoelectron Ionization Source Portable TOF-MS and Its Application in Analysis of Volatile Reduced Sulfur Compounds.chinese journal of analytical chemistry,43(3),444-450. |
MLA | Li Jin-Xu,et al."Magnetic Field Enhanced Photoelectron Ionization Source Portable TOF-MS and Its Application in Analysis of Volatile Reduced Sulfur Compounds".chinese journal of analytical chemistry 43.3(2015):444-450. |
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