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题名: Dopant-enhanced atmospheric pressure glow discharge ionization source for ion mobility spectrometry
作者: Dong, Can1, 2;  Wang, Lina1;  Wang, Weiguo1;  Hou, Keyou1;  Li, Haiyang1
通讯作者: 李海洋
关键词: glow discharges ;  ion mobility ;  ionisation
刊名: REVIEW OF SCIENTIFIC INSTRUMENTS
发表日期: 2008-10-01
DOI: 10.1063/1.2999832
卷: 79, 期:10, 页:104101-1-104101-7
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 102
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Instruments & Instrumentation ;  Physics, Applied
研究领域[WOS]: Instruments & Instrumentation ;  Physics
英文摘要: A dopant-enhanced atmospheric pressure direct current glow discharge ionization source for ion mobility spectrometry (APDCGD-IMS) has been described. It is shown that the ion intensity can be greatly increased by addition of species with ionization energy lower than that of buffer gas when the direction of the electric field between the target electrode and the extraction electrode was opposite to that of the drift field. With N-2 as the buffer gas, adding O-2 (or air), acetone, and CH2Cl2 with certain concentration can enhanced the ion intensity more than one order of magnitude, and for O-2, it was found that the enhancement depending on both the concentration of O-2 and the flow rate of the carrier gas, and the largest enhancements of the signal intensity for electron in negative mode and reaction ion in positive mode reached at O-2 concentration about 1.5%-2%. The main physicochemical processes were summarized and discussed, and a zero-dimensional reaction rate model was set up to simulate the corresponding results. It was proposed that the enhancement of signal intensity was ascribed to the various ionization processes and reactions in APDCGD.
关键词[WOS]: DIELECTRIC BARRIER DISCHARGES ;  ENERGY DISTRIBUTION FUNCTION ;  PLASMA CHROMATOGRAPHY ;  NUMERICAL-SIMULATION ;  CHEMICAL-PROCESSES ;  MIXTURES ;  CORONA ;  PHOTOIONIZATION ;  KINETICS ;  DESIGN
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000260573500037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100741
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Dong, Can,Wang, Lina,Wang, Weiguo,et al. Dopant-enhanced atmospheric pressure glow discharge ionization source for ion mobility spectrometry[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2008,79(10):104101-1-104101-7.
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