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学科主题: 物理化学
题名: Sensitive Detection of Black Powder by a Stand-Alone Ion Mobility Spectrometer with an Embedded Titration Region
作者: Liang, Xixi1, 2;  Zhou, Qinghua1, 2;  Wang, Weiguo1;  Wang, Xin1;  Chen, Wendong1, 2;  Chen, Chuang1, 2;  Li, Yang1;  Hou, Keyong1;  Li, Jinghua1;  Li, Haiyang1
通讯作者: 李海洋
刊名: ANALYTICAL CHEMISTRY
发表日期: 2013-05-21
DOI: 10.1021/ac400337s
卷: 85, 期:10, 页:4849-4852
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 1
项目归属: 102
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: Sensitive detection of black powder (BP) by stand-alone ion mobility spectrometry (IMS) is full of challenges. In conventional air-based IMS, overlap between the reactant ion O-2(-)(H2O)(n) peak and the sulfur ion peak occurs severely; and common doping methods, providing alternative reactant ion Cl-(H2O)(n), would hinder the formation of ionic sulfur allotropes. In this work, an ion mobility spectrometer embedded with a titration region (TR-IMS) downstream from the ionization region was developed for selective and sensitive detection of sulfur in BP with CH2Cl2 as the titration reagent. Sulfur. ions were produced via reactions between sulfur molecules and O-2(-)(H2O)(n) ions in the ionization region, and the remaining O-2(-)(H2O)(n) ions that entered the titration region were converted to Cl-(H2O)(n) ions, which avoided the peak overlap as well as the negative effect of CH2Cl2 on sulfur ions. The limit of detection for sulfur was measured to be 5 pg. Furthermore, it was demonstrated that this TR-IMS was qualified for detecting less than 5 ng of BP and other nitro-organic explosives.
关键词[WOS]: EXPLOSIVE TRACE DETECTOR ;  MASS-SPECTROMETER ;  SULFUR
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000319651100004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119305
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 Univ, Beijing 100039, Peoples R China

Recommended Citation:
Liang, Xixi,Zhou, Qinghua,Wang, Weiguo,et al. Sensitive Detection of Black Powder by a Stand-Alone Ion Mobility Spectrometer with an Embedded Titration Region[J]. ANALYTICAL CHEMISTRY,2013,85(10):4849-4852.
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