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题名: Development of Unidirectional Negative Corona Discharge Ion Mobility Spectrometer for Detection of Explosives
作者: Liu Ji-Wei1;  Peng Li-Ying2, 3;  Huang Wei2;  Wang Wei-Guo2;  Jiang Dan-Dan2, 3;  Sun Qi1;  Li Hai-Yang2
关键词: Ion mobility spectrometry ;  Explosives ;  Ionization source ;  Negative corona discharge ;  Unidirectional mode
刊名: CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
发表日期: 2016-08-01
DOI: 10.11895/j.issn.0253.3820.160038
卷: 44, 期:8, 页:1185-1192
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
英文摘要: Ion mobility spectrometry (IMS) based explosives detectors is wieldy deployed at the check points of airport, etc, so the development of new ionization method to replace the radioactive Ni-63 ion source in IMS is highly demanded. In this study, a novel negative corona discharge was developed for ion mobility spectrometer for rapid detection of trace explosives, which was running in the unidirectional mode to efficiently remove nitrogen oxides and ozone produced from the discharge process. The diameter of target electrode was 3 mm, the distance between the needle and the target electrode was 2 mm, the discharge voltage was 2400 V and the flow rate of drift gas was 1200 mL/min. Under the optimized conditions, the dominant reactant ions was O-2(H2O)(n) and could be used to directly detect the common explosives, such as trinitrotoluene (TNT), ammonium nitrate (AN), nitroglycerin (NG), pentaerythritol tetranitrate (PETN) and hexahydro. 1,3,5-trinitro. 1,3,5-triazine (RDX). The limit of detection of TNT was 200 pg/mu L. These results indicated that negative corona discharge ionization source, with the advantanges of the high sensibility, simple structure and no radioactivity, could be used as a potential and promising ionization source for ion mobility spectrometry to detect explosives.
关键词[WOS]: IONIZATION SOURCE ;  SENSITIVE DETECTION ;  MASS-SPECTROMETRY ;  RAPID DETECTION ;  MICROEXTRACTION ;  WATER ;  AIR
语种: 英语
WOS记录号: WOS:000389035300004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150352
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.Liaoning Normal Univ, Fac Chem & Chem Engn, Inst Chem Functionalized Mat, Dalian 116029, 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

Recommended Citation:
Liu Ji-Wei,Peng Li-Ying,Huang Wei,et al. Development of Unidirectional Negative Corona Discharge Ion Mobility Spectrometer for Detection of Explosives[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2016,44(8):1185-1192.
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