Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane

Ramón González-méndez; Peter Watts; David C. Howse; Immacolata Procino; Henry Mcintyre; Chris A. Mayhew

doi:10.1016/j.ijms.2017.04.011

Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane

Ramón González-méndez, Peter Watts, David C. Howse, Immacolata Procino, Henry Mcintyre, Chris A. Mayhew

Physics and Astronomy

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Abstract

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−·HOO resulting from a reaction with O2−. 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−·HOO product ion was investigated by using isoflurane (ISOF) as a probe to monitor the changing ratios of Cl− and Cl−·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.

Original language	English
Journal	International Journal of Mass Spectrometry
Early online date	29 Apr 2017
DOIs	https://doi.org/10.1016/j.ijms.2017.04.011
Publication status	E-pub ahead of print - 29 Apr 2017

Keywords

Ion mobility spectrometry
IMS–MS
Pentachloroethane
Chlorinated ethane
Ion-molecule chemistry

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http://www.sciencedirect.com/science/article/pii/S1387380617300386Licence: None: All rights reserved

Cite this

@article{1a67e50fb1cc40c3ad05fce5408baeda,

title = "Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane",

abstract = "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−·HOO resulting from a reaction with O2−. Based upon the moisture content of the system, these ions can be observed as a doublet in a {\textquoteleft}dry{\textquoteright} system or as a singlet in a {\textquoteleft}wet{\textquoteright} system. The nature of the Cl−·HOO product ion was investigated by using isoflurane (ISOF) as a probe to monitor the changing ratios of Cl− and Cl−·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.",

keywords = "Ion mobility spectrometry , IMS–MS, Pentachloroethane , Chlorinated ethane , Ion-molecule chemistry",

author = "Ram{\'o}n Gonz{\'a}lez-m{\'e}ndez and Peter Watts and Howse, {David C.} and Immacolata Procino and Henry Mcintyre and Mayhew, {Chris A.}",

year = "2017",

month = apr,

day = "29",

doi = "10.1016/j.ijms.2017.04.011",

language = "English",

journal = "International Journal of Mass Spectrometry",

issn = "1387-3806",

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TY - JOUR

T1 - Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane

AU - González-méndez, Ramón

AU - Watts, Peter

AU - Howse, David C.

AU - Procino, Immacolata

AU - Mcintyre, Henry

AU - Mayhew, Chris A.

PY - 2017/4/29

Y1 - 2017/4/29

N2 - 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−·HOO resulting from a reaction with O2−. 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−·HOO product ion was investigated by using isoflurane (ISOF) as a probe to monitor the changing ratios of Cl− and Cl−·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.

AB - 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−·HOO resulting from a reaction with O2−. 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−·HOO product ion was investigated by using isoflurane (ISOF) as a probe to monitor the changing ratios of Cl− and Cl−·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.

KW - Ion mobility spectrometry

KW - IMS–MS

KW - Pentachloroethane

KW - Chlorinated ethane

KW - Ion-molecule chemistry

U2 - 10.1016/j.ijms.2017.04.011

DO - 10.1016/j.ijms.2017.04.011

M3 - Article

SN - 1387-3806

JO - International Journal of Mass Spectrometry

JF - International Journal of Mass Spectrometry

ER -

Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane

Abstract

Keywords

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