Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives

	Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives
	Cheng, Shasha 1,2; Dou, Jian 3; Wang, Weiguo 1; Chen, Chuang 1,2; Hua, Lei 1; Zhou, Qinghua 1,2; Hou, Keyong 1; Li, Jinghua 1; Li, Haiyang 1
刊名	analytical chemistry
	2013
卷号	85 期号:1 页码:319-326
通讯作者	李海洋
产权排序	待补充
合作状况	中
英文摘要	ion mobility spectrometry (ims) is a key trace detection technique for explosives and the development of a simple, stable, and efficient nonradioactive ionization source is highly demanded. a dopant-assisted negative photoionization (danp) source has been developed for ims, which uses a commercial vuv krypton lamp to ionize acetone as the source of electrons to produce negative reactant ions in air. with 20 ppm of acetone as the dopant, a stable current of reactant ions of 1.35 na was achieved. the reactant ions were identified to be co3-(h2o)(n) (k-0 = 2.44 cm(2) v-1 s(-1)) by atmospheric pressure time-of-flight mass spectrometry, while the reactant ions in ni-63 source were o-2(-)(h2o) (k-0 = 2.30 cm(2) v-1 s(-1)). finally, its capabilities for detection of common explosives including ammonium nitrate fuel oil (anfo), 2,4,6-trinitrotoluene (tnt), n-nitrobis(2-hydroxyethyl)amine dinitrate (dina), and pentaerythritol tetranitrate (petn) were evaluated, and the limits of detection of 10 pg (anfo), 80 pg (tnt), and 100 pg (dina) with a linear range of 2 orders of magnitude were achieved. the time-of-flight mass spectra obtained with use of danp source clearly indicated that petn and dina can be directly ionized by the ion-association reaction of co3- to form petn.co3- and dina.co3- adduct ions, which result in good sensitivity for the danp source. the excellent stability, good sensitivity, and especially the better separation between the reactant and product ion peaks make the danp a potential nonradioactive ionization source for ims.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, analytical
研究领域[WOS]	chemistry
关键词[WOS]	atmospheric-pressure photoionization ; corona discharge ionization ; flight mass-spectrometry ; gas-chromatography ; quantitative-analysis ; chemical-ionization ; trace detector ; air ; mixtures ; design
收录类别	SCI
资助信息	1，1
原文出处	326
语种	英语
WOS记录号	WOS:000313156500048
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119217]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Jilin Univ, Dept Instrumentat & Elect Engn, Changchun 130021, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Shasha,Dou, Jian,Wang, Weiguo,et al. Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives[J]. analytical chemistry,2013,85(1):319-326.
APA	Cheng, Shasha.,Dou, Jian.,Wang, Weiguo.,Chen, Chuang.,Hua, Lei.,...&Li, Haiyang.(2013).Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives.analytical chemistry,85(1),319-326.
MLA	Cheng, Shasha,et al."Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives".analytical chemistry 85.1(2013):319-326.