Acetone-Enhanced Negative Vacuum Ultraviolet Photoionization Mass Spectrometry for Rapid Detection of Explosives

被引：0

作者：

Dou Jian ^{[1
]}

Hua Lei ^{[2
]}

Hou Ke-Yong ^{[2
]}

Jiang Lei ^{[1
]}

Cheng Sha-Sha ^{[2
,3
]}

Qi Guo-Chen ^{[1
]}

Li Qing-Yun ^{[1
]}

Tian Di ^{[1
]}

Li Hai-Yang ^{[1
]}

机构：

[1] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130026, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2014年 / 42卷 / 07期

关键词：

Acetone-enhanced; Negative photoionization; Explosives; Time-of-flight mass spectrometry; Vacuum ultraviolet lamp; VOLATILE ORGANIC-COMPOUNDS; ION MOBILITY SPECTROMETRY; IONIZATION; CHROMATOGRAPHY;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this article, an acetone. enhanced negative photoionization (AENP) source based on a 10. 6 eV vacuum ultraviolet (VUV) lamp was developed and coupled to a home. made time. of. flight mass spectrometer for rapid detection of trace explosives. In the AENP source, acetone molecules absorbed 10. 6 eV photons and were ionized by single photon ionization to emit photoelectrons. The photoelectrons reacted with O-2, CO2, etc. in the atmosphere to produce mainly CO3- negative reactant ions. With this ionization source, common explosives, N-nitrobiz(2-hyolorolroxy ethyl)-amine dinitrate (DINA), Tetryl, trinitrotoluene (TNT) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), could be detected sensitively, and the limit of detection of 2 pg (TNT) with a linear range of 3 orders of magnitude was achieved. The simple structure, high sensitivity characteristics make the AENP source as a promising ionization source for mass spectrometry.

引用

页码：1017 / 1021

页数：5

共 17 条

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