Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives

	Dopant-assisted reactive low temperature plasma probe for sensitive and specific detection of explosives
	Chen, Wendong; Hou, Keyong; Hua, Lei; Li, Haiyang
刊名	analyst
	2015
卷号	140 期号:17 页码:6025-6030
英文摘要	a 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.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, analytical
研究领域[WOS]	chemistry
关键词[WOS]	ion mobility spectrometry ; desorption electrospray-ionization ; atmospheric-pressure afterglow ; mass-spectrometry ; corona discharge ; real-time ; current trends ; black powder ; surfaces ; selectivity
收录类别	SCI
语种	英语
WOS记录号	WOS:000359217000028
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/146439]
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	Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
推荐引用方式 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.