DICP OpenIR
Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection
Chen, Shasha1,2; Wang, Weiguo1; Zhou, Qinghua1,2; Chen, Chuang1; Peng, Liying1,2; Hua, Lei1; Li, Yang1; Hou, Keyong1; Li, Haiyang1
Source PublicationANALYTICAL CHEMISTRY
2014-03-04
DOI10.1021/ac404067z
Volume86Issue:5Pages:2687-2693
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordPLASMA CHROMATOGRAPHY ; CORONA DISCHARGE ; SENSITIVE DETECTION ; MASS-SPECTROMETER ; TRACE DETECTOR ; REAGENT IONS ; IONIZATION ; TNT ; 2,4,6-TRINITROTOLUENE ; VAPORS
AbstractIon mobility spectrometry (IMS) has become the most deployed technique for on-site detection of trace explosives, and the reactant ions generated in the ionization source are tightly related to the performances of IMS. Combination of multiform reactant ions would provide more information and is in favor of correct identification of explosives. Fast switchable CO3-(H2O)(n) and O-2(-)(H2O)(n) reactant ions were realized in a dopant-assisted negative photoionization ion mobility spectrometer (DANP-IMS). The switching could be achieved in less than 2 s by simply changing the gas flow direction. Up to 88% of the total reactant ions were CO3-(H2O)(n) in the bidirectional mode, and 89% of that were O-2(-)(H2O)(n) in the unidirectional mode. The characteristics of combination of CO3-(H2O)(n) and O-2(-)(H2O)(n) were demonstrated by the detection of explosives, including 2,4,6-trinitrotoluene (TNT), cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX), ammonium nitrate fuel oil (ANFO), and black powder (BP). For TNT, RDX, and BP, product ions with different reduced mobility values (K-0) were observed with CO3-(H2O)(n) and O-2(-)(H2O)(n), respectively, which is a benefit for the accurate identification. For ANFO, the same product ions with K-0 of 2.07 cm(2) V-1 s(-1) were generated, but improved peak-to-peak resolution as well as sensitivity were achieved with CO3-(H2O)(n). Moreover, an improved peak-to-peak resolution was also obtained for BP with CO3-(H2O)(n), while the better sensitivity was obtained with O-2(-)(H2O)(n).
Language英语
WOS IDWOS:000332494100057
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145805
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chen, Shasha,Wang, Weiguo,Zhou, Qinghua,et al. Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection[J]. ANALYTICAL CHEMISTRY,2014,86(5):2687-2693.
APA Chen, Shasha.,Wang, Weiguo.,Zhou, Qinghua.,Chen, Chuang.,Peng, Liying.,...&Li, Haiyang.(2014).Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection.ANALYTICAL CHEMISTRY,86(5),2687-2693.
MLA Chen, Shasha,et al."Fast Switching of CO3-(H2O)(n) and O-2(-)(H2O)(n) Reactant Ions in Dopant-Assisted Negative Photoionization Ion Mobility Spectrometry for Explosives Detection".ANALYTICAL CHEMISTRY 86.5(2014):2687-2693.
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