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学科主题: 物理化学
题名: Non-contact halogen lamp heating assisted LTP ionization miniature rectilinear ion trap: a platform for rapid, on-site explosives analysis
作者: Chen, Wendong1, 2;  Hou, Keyong1;  Xiong, Xingchuang3;  Jiang, You3;  Zhao, Wuduo1, 2;  Hua, Lei1;  Chen, Ping1, 2;  Xie, Yuanyuan1, 2;  Wang, Zhenxin1;  Li, Haiyang1
通讯作者: 侯可勇 ;  李海洋
刊名: ANALYST
发表日期: 2013
DOI: 10.1039/c3an00555k
卷: 138, 期:17, 页:5068-5073
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: A platform consisting of a halogen lamp, a low temperature plasma (LTP) probe, and a miniature rectilinear ion trap mass spectrometer (RIT-MS) has been constructed and evaluated to detect organic and inorganic explosives on solid surfaces. This platform features two attractive characteristics: high sensitivity for the explosives with low volatility, and rapid analysis speed for the explosives on large surface areas. With non-contact heating by the halogen lamp, the signal intensities for the explosives with relatively high volatility were improved by over an order of magnitude, compared to those obtained at room temperature; and even more, the explosives with low volatility, which could hardly be detected at room temperature, were able to be readily identified. The limits of detection (LODs) of the selected explosives were all at the picogram level (e. g., 10 pg and 20 pg for TNT and RDX, respectively) with a heating time of 3 s. Using manual surface swabbing, the analysis of explosives on a large surface area (7.5 cm x 2.5 cm) was accomplished within 10 s, and an acceptable sensitivity could be acquired; additionally, inorganic explosives (black powder and firecracker) were successfully detected. Without any sample pretreatment, the platform was used to analyze the wastewater from an explosives factory, confirming the existence of 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (2,4-DNT), and 2,6-dinitrotoluene (2,6-DNT), and the concentration of TNT was determined to be 5 ng mL(-1). All these results indicated that the proposed platform was a promising technique for security monitoring and environmental analysis.
关键词[WOS]: ENHANCED RAMAN-SPECTROSCOPY ;  MASS-SPECTROMETRY ;  MOBILITY SPECTROMETRY ;  THERMAL-DESORPTION ;  SOLID-SURFACES ;  SECURITY ;  RESIDUES ;  BARRIER ;  SENSORS ;  HEATER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000322389600049
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119124
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Natl Inst Metrol, Beijing 100013, Peoples R China

Recommended Citation:
Chen, Wendong,Hou, Keyong,Xiong, Xingchuang,et al. Non-contact halogen lamp heating assisted LTP ionization miniature rectilinear ion trap: a platform for rapid, on-site explosives analysis[J]. ANALYST,2013,138(17):5068-5073.
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