Ion mobility studies on the negative ion-molecule chemistry of pentachloroethane
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Colleges, School and Institutes
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.
|Journal||International Journal of Mass Spectrometry|
|Early online date||29 Apr 2017|
|Publication status||E-pub ahead of print - 29 Apr 2017|
- Ion mobility spectrometry , IMS–MS, Pentachloroethane , Chlorinated ethane , Ion-molecule chemistry