Ion mobility studies on the negative ion molecule chemistry of pentachloroethane

被引：3

作者：

Gonzalez-Mendez, Ramon ^{[1
]}

Watts, Peter ^{[1
]}

Howse, David C. ^{[1
]}

Procino, Immacolata ^{[2
]}

McIntyre, Henry ^{[2
]}

Mayhew, Chris A. ^{[1
,3
]}

机构：

[1] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[2] Smiths Detect, Century House,Maylands Ave, Hemel Hempstead HP2 7DE, Herts, England

[3] Leopold Franzen Univ Innsbruck, Inst Atemgasanalyt, Rathauspl 4, A-6850 Dornbirn, Austria

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2017年 / 417卷

基金：

欧盟第七框架计划;

关键词：

Ion mobility spectrometry; IMS-MS; Pentachioroethane; Chlorinated ethane; Ion-molecule chemistry; ETHYLENE-GLYCOL DINITRATE; ELECTRON-ATTACHMENT; SPECTROMETRY; DECOMPOSITION; EXPLOSIVES; IONIZATION; PRESSURE; KINETICS; TNT;

D O I：

10.1016/j.ijms.2017.04.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

In this study we present an investigation of the negative ion-molecule chemistry of pentachloroethane (PCE) in air based ion mobility spectrometry and ion mobility spectrometry-mass spectrometry systems. The observed product ions are Cl-, produced by dissociative electron attachment, and Cl- center dot HOO resulting from a reaction with O-2(-). Based upon the moisture content of the system, these ions can be observed as a doublet in a 'dry' system or as a singlet in a 'wet' system. The nature of the Cl- center dot HOO product ion was investigated by using isoflurane (ISOF) as a probe to monitor the changing ratios of Cl and Cl-center dot HOO as the PCE concentration decreased. This confirmed the origins of the two product anions. Electronic structure calculations are provided. These have aided the understanding of the reaction processes observed.

引用

页码：16 / 21

页数：6

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