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	Novel Chemical Ion Source for a High-Field Asymmetric Waveform Ion Mobility Spectrometer Used under Ambient Conditions
	Liu Kun ; Tang Fei ; Wang Xiao-Hao ; Wei Xue-Ye ; Xiong Ji-Jun
	2010-10-12 ; 2010-10-12
关键词	Mass spectrum Ambient FAIMS Corona discharge Ion source MEMS IONIZATION MASS-SPECTROMETRY ATMOSPHERIC-PRESSURE GAS-PHASE AMMONIA Chemistry, Physical
中文摘要	To satisfy the requirements for a high-field asymmetric waveform ion mobility spectrometer (FAIMS), a novel ambient direct current corona discharge chemical ion source is put forward. It consists of an inner line electrode, an outer cylinder electrode, and a traction electrode. The inner and outer electrode radii are 0.08 and 2 mm, respectively. There are four slots in the cylinder electrode for injection of samples and traction of ions. The mass spectrum experiment results show that chemicals, such as acetone, ethanol, aniline, N,N-dimethyl formamide, dimethyl methylphosphonate (DMMP), ethyl acetate, formic acid, acetic acid, and phenol, can be ionized well. Electrometer experiments show that the ion source can produce a stable ion current. By analysis of the mass spectra, we found that the main ions were same at different time indicating that the ion source is stable. The ion source was fabricated on a silicon substrate by inductively coupled plasma (ICP) etching, which demonstrates that the structure is compatible with micro-electro-mechanical systems (MEMS) technics. The ion source is small, has a simple structure, is non-radiative, stable etc. It satisfies the requirements for FAIMS and can also be used in an ambient mass spectrometer (MS), micro MS, and ion mobility spectrometer (IMS).
语种	中文 ; 中文
出版者	PEKING UNIV PRESS ; BEIJING ; PEKING UNIV, CHEMISTRY BUILDING, BEIJING 100871, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80175]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Kun,Tang Fei,Wang Xiao-Hao,et al. Novel Chemical Ion Source for a High-Field Asymmetric Waveform Ion Mobility Spectrometer Used under Ambient Conditions[J],2010, 2010.
APA	Liu Kun,Tang Fei,Wang Xiao-Hao,Wei Xue-Ye,&Xiong Ji-Jun.(2010).Novel Chemical Ion Source for a High-Field Asymmetric Waveform Ion Mobility Spectrometer Used under Ambient Conditions..
MLA	Liu Kun,et al."Novel Chemical Ion Source for a High-Field Asymmetric Waveform Ion Mobility Spectrometer Used under Ambient Conditions".(2010).

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