DICP OpenIR
Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives
Chen, Wendong; Hou, Keyong; Hua, Lei; Li, Haiyang
Source PublicationANALYST
2015
DOI10.1039/c5an00816f
Volume140Issue:17Pages:6025-6030
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordION MOBILITY SPECTROMETRY ; DESORPTION ELECTROSPRAY-IONIZATION ; ATMOSPHERIC-PRESSURE AFTERGLOW ; MASS-SPECTROMETRY ; CORONA DISCHARGE ; REAL-TIME ; CURRENT TRENDS ; BLACK POWDER ; SURFACES ; SELECTIVITY
AbstractA dopant-assisted reactive low temperature plasma (DARLTP) probe was developed for sensitive and specific detection of explosives by a miniature rectilinear ion trap mass spectrometer. The DARLTP probe was fabricated using a T-shaped quartz tube. The dopant gas was introduced into the plasma stream through a side-tube. Using CH2Cl2 doped wet air as the dopant gas, the detection sensitivities were improved about 4-fold (RDX), 4-fold (PETN), and 3-fold (tetryl) compared with those obtained using the conventional LTP. Furthermore, the formation of [M + Cl-35](-) and [M + Cl-37](-) for these explosives enhanced the specificity for their identification. Additionally, the quantities of fragment ions of tetryl and adduct ions such as [RDX + NO2](-) and [PETN + NO2](-) were dramatically reduced, which simplified the mass spectra and avoided the overlap of mass peaks for different explosives. The sensitivity improvement may be attributed to the increased intensity of reactant ion [HNO3 + NO3](-), which was enhanced 4-fold after the introduction of dopant gas. The limits of detection (LODs) for RDX, tetryl, and PETN were down to 3, 6, and 10 pg, respectively. Finally, an explosive mixture was successfully analyzed, demonstrating the potential of the DARLTP probe for qualitative and quantitative analysis of complicated explosives.
Language英语
WOS IDWOS:000359217000028
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146439
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Chen, Wendong,Hou, Keyong,Hua, Lei,et al. Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives[J]. ANALYST,2015,140(17):6025-6030.
APA Chen, Wendong,Hou, Keyong,Hua, Lei,&Li, Haiyang.(2015).Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives.ANALYST,140(17),6025-6030.
MLA Chen, Wendong,et al."Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives".ANALYST 140.17(2015):6025-6030.
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