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题名: Bipolar Ionization Source for Ion Mobility Spectrometry Based on Vacuum Ultraviolet Radiation Induced Photoemission and Photoionization
作者: Chen, Chuang1, 2;  Dong, Can1;  Du, Yongzhai1, 2;  Cheng, Shasha1, 2;  Han, Fenglei1, 2;  Li, Lin1;  Wang, Weiguo1;  Hou, Keyong1;  Li, Haiyang1
通讯作者: 李海洋
刊名: ANALYTICAL CHEMISTRY
发表日期: 2010-05-15
DOI: 10.1021/ac100342y
卷: 82, 期:10, 页:4151-4157
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 ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A novel bipolar ionization source based on a commercial vacuum-UV Kr lamp has been developed for ion mobility spectrometry (IMS), which can work in both negative and positive ion mode. Its reactant ions formed in negative ion mode were predominantly assigned to be O(3)-(H(2)O)(n), which is different from that of the (63)Ni source with purified air as carrier and drift gases. The formation of O(3)-(H(2)O)(n) was due to the production of ozone caused by ultraviolet radiation, and the ozone concentration was measured to be about 1700 ppmv by iodometric titration method. Inorganic molecules such as SO(2), CO(2), and H(2)S can be easily detected in negative ion mode, and a linear dynamic range of 3 orders of magnitude and a limit of detection (S/N = 3) of 150 pptv were obtained for SO(2). Its performance as a negative ion source was investigated by the detection of ammonium nitrate fuel oil explosive, N-nitrobis(2-hydroxyethyl)amine dinitrate, cyclo-1,3, 5-trimethylene-2,4, 6-trinitramine, and pentaerythritol tetranitrate (PETN) at 150 degrees C. The limit of detection was reached at 45 pg for PETN, which was much lower than the 190 pg using (63)Ni ion mobility spectrometry under the same experimental condition. Also, its performance as an ordinary photoionization source was investigated in detecting benzene, toluene, and m-xylene.
关键词[WOS]: ELECTROSPRAY-IONIZATION ;  PLASMA CHROMATOGRAPHY ;  GAS-CHROMATOGRAPHY ;  MOLECULE REACTIONS ;  MASS-SPECTROMETER ;  M-XYLENE ;  AIR ;  DETECTOR ;  DESORPTION ;  BENZENE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000277531500027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/103619
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, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Chen, Chuang,Dong, Can,Du, Yongzhai,et al. Bipolar Ionization Source for Ion Mobility Spectrometry Based on Vacuum Ultraviolet Radiation Induced Photoemission and Photoionization[J]. ANALYTICAL CHEMISTRY,2010,82(10):4151-4157.
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