DICP OpenIR
学科主题物理化学
Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Sensitive Detection of Explosives
Cheng, Shasha1,2; Dou, Jian3; Wang, Weiguo1; Chen, Chuang1,2; Hua, Lei1; Zhou, Qinghua1,2; Hou, Keyong1; Li, Jinghua1; Li, Haiyang1; Li HY(李海洋)
刊名ANALYTICAL CHEMISTRY
2013
DOI10.1021/ac302836f
85期:1页:319-326
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
资助者1,1 ; 1,1 ; 1,1 ; 1,1
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
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.
语种英语
资助者1,1 ; 1,1 ; 1,1 ; 1,1
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WOS记录号WOS:000313156500048
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被引频次:42[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/119217
专题中国科学院大连化学物理研究所
通讯作者Li HY(李海洋)
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
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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.,...&李海洋.(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.
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