Vacuum Ultraviolet Lamp Based Magnetic Field Enhanced Photoelectron Ionization and Single Photon Ionization Source for Online Time-of-Flight Mass Spectrometry
文献类型：期刊论文
| 作者 | Wu, Qinghao1,2; Fua, Lei1,2; Hou, Keyong1; Cui, Huapeng1,2; Chen, Wendong1,2; Chen, Ping1,2; Wang, Weiguo1; Li, Jinghua1; Li, Haiyang1 |
| 刊名 | analytical chemistry
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 83期号:23页码:8992-8998 |
| ISSN号 | 1520-6882 |
| 产权排序 | 1,1 |
| 通讯作者 | 李海洋 |
| 中文摘要 | vacuum ultraviolet lamp based magnetic field enhanced photoelectron ionization and single photon ionization source for online time-of-flight mass spectrometry |
| 英文摘要 | a magnetic field enhanced photoelectron ionization (mepei) source combined with single photon ionization (spi) was developed for an orthogonal acceleration time-of-flight mass spectrometer (oatofms). a commercial radio frequency (rf) powered vacuum ultraviolet (vuv) lamp was used as spi light source, and the photoelectrons generated by photoelectric effect were accelerated to induce electron ionization (ei). the mepei was obtained by applying a magnetic field of about 800 g with a permanent annular magnet. compared to a nonmagnetic field photoelectron ionization source, the signal intensities for so(2), sf(6), o(2), and n(2) in mepei were improved more than 2 orders with the photoelectron energy around 20 ev, while most of the characteristics of soft ionization still remained. simulation with simion showed that the sensitivity enhancement in mepei was ascribed to the increase of the electron moving path and the improvement of the electrons transmission. the limits of detection for so(2) and benzene were 750 and 80 ppbv within a detection time of 4s, respectively. the advantages of the source, including broad range of ionizable compounds, reduced fragments, and good sensitivity with low energy mepei, were demonstrated by monitoring pyrolysis products of polyvinyl chloride (pvc) and the intermediate products in discharging of the sf(6) gas inpurity. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, analytical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | electron-impact ionization ; organic-compounds ; laser-desorption ; low-energy ; gas ; decomposition ; surface ; degradation ; radiation ; emission |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000297481700025 |
| 公开日期 | 2012-07-09 |
| 源URL | [http://159.226.238.44/handle/321008/115807]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Qinghao,Fua, Lei,Hou, Keyong,et al. Vacuum Ultraviolet Lamp Based Magnetic Field Enhanced Photoelectron Ionization and Single Photon Ionization Source for Online Time-of-Flight Mass Spectrometry[J]. analytical chemistry,2011,83(23):8992-8998. |
| APA | Wu, Qinghao.,Fua, Lei.,Hou, Keyong.,Cui, Huapeng.,Chen, Wendong.,...&Li, Haiyang.(2011).Vacuum Ultraviolet Lamp Based Magnetic Field Enhanced Photoelectron Ionization and Single Photon Ionization Source for Online Time-of-Flight Mass Spectrometry.analytical chemistry,83(23),8992-8998. |
| MLA | Wu, Qinghao,et al."Vacuum Ultraviolet Lamp Based Magnetic Field Enhanced Photoelectron Ionization and Single Photon Ionization Source for Online Time-of-Flight Mass Spectrometry".analytical chemistry 83.23(2011):8992-8998. |
入库方式： OAI收割
来源：大连化学物理研究所
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