DICP OpenIR
Subject Area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)
Source PublicationANALYTICAL CHEMISTRY
2013
DOI10.1021/ac302836f
Volume85Issue:1Pages:319-326
Indexed BySCI
Cooperation Status
SubtypeArticle
Department1
Funding Project102
Contribution Rank待补充
WOS HeadingsScience & Technology ; Physical Sciences
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordATMOSPHERIC-PRESSURE PHOTOIONIZATION ; CORONA DISCHARGE IONIZATION ; FLIGHT MASS-SPECTROMETRY ; GAS-CHROMATOGRAPHY ; QUANTITATIVE-ANALYSIS ; CHEMICAL-IONIZATION ; TRACE DETECTOR ; AIR ; MIXTURES ; DESIGN
AbstractIon 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.
Language英语
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
URL查看原文
WOS IDWOS:000313156500048
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/119217
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi HY(李海洋)
Affiliation1.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
Recommended Citation
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.,...&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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