中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection
作者: Chen, Shasha1, 2;  Wang, Weiguo1;  Zhou, Qinghua1, 2;  Chen, Chuang1;  Peng, Liying1, 2;  Hua, Lei1;  Li, Yang1;  Hou, Keyong1;  Li, Haiyang1
刊名: ANALYTICAL CHEMISTRY
发表日期: 2014-03-04
DOI: 10.1021/ac404067z
卷: 86, 期:5, 页:2687-2693
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Ion mobility spectrometry (IMS) has become the most deployed technique for on-site detection of trace explosives, and the reactant ions generated in the ionization source are tightly related to the performances of IMS. Combination of multiform reactant ions would provide more information and is in favor of correct identification of explosives. Fast switchable CO3-(H2O)(n) and O-2(-)(H2O)(n) reactant ions were realized in a dopant-assisted negative photoionization ion mobility spectrometer (DANP-IMS). The switching could be achieved in less than 2 s by simply changing the gas flow direction. Up to 88% of the total reactant ions were CO3-(H2O)(n) in the bidirectional mode, and 89% of that were O-2(-)(H2O)(n) in the unidirectional mode. The characteristics of combination of CO3-(H2O)(n) and O-2(-)(H2O)(n) were demonstrated by the detection of explosives, including 2,4,6-trinitrotoluene (TNT), cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX), ammonium nitrate fuel oil (ANFO), and black powder (BP). For TNT, RDX, and BP, product ions with different reduced mobility values (K-0) were observed with CO3-(H2O)(n) and O-2(-)(H2O)(n), respectively, which is a benefit for the accurate identification. For ANFO, the same product ions with K-0 of 2.07 cm(2) V-1 s(-1) were generated, but improved peak-to-peak resolution as well as sensitivity were achieved with CO3-(H2O)(n). Moreover, an improved peak-to-peak resolution was also obtained for BP with CO3-(H2O)(n), while the better sensitivity was obtained with O-2(-)(H2O)(n).
关键词[WOS]: PLASMA CHROMATOGRAPHY ;  CORONA DISCHARGE ;  SENSITIVE DETECTION ;  MASS-SPECTROMETER ;  TRACE DETECTOR ;  REAGENT IONS ;  IONIZATION ;  TNT ;  2,4,6-TRINITROTOLUENE ;  VAPORS
语种: 英语
WOS记录号: WOS:000332494100057
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145805
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Chen, Shasha,Wang, Weiguo,Zhou, Qinghua,et al. Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection[J]. ANALYTICAL CHEMISTRY,2014,86(5):2687-2693.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Chen, Shasha]'s Articles
 [Wang, Weiguo]'s Articles
 [Zhou, Qinghua]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Chen, Shasha]‘s Articles
 [Wang, Weiguo]‘s Articles
 [Zhou, Qinghua]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace