Electron impact ionisation and fragmentation of methanol and ethanol

2.50
Hdl Handle:
http://hdl.handle.net/2436/611569
Title:
Electron impact ionisation and fragmentation of methanol and ethanol
Authors:
Nixon, K.L.; Pires, W.A.D.; Neves, R.F.C.; Duque, H.V.; Jones, D.B. ( 0000-0001-7425-7157 ) ; Brunger, M.J.; Lopes, M.C.A.
Abstract:
Electron impact ionisation and dissociative ionisation of the two smallest primary alcohols have been investigated. A quadrupole mass spectrometer was used, with an internal ionising electron source resulting in an energy resolution of ~ 0.8 eV. The partial ionisation cross sections (PICS) for a number of individual cations have been measured for energies between 10 - 100 eV. The present data compares well with previous results for methanol. Surprisingly, however, this study is the first to report individual PICS for ethanol. The sum of the present PICS for both methanol and ethanol is also compared to the total ionisation cross sections reported in the literature and are found to be in good accord. Additionally, appearance energies have been derived by fitting the Wannier equation to data measured within ~ 2 eV of the cation formation threshold. However, the low energy resolution limits the precision with which these values are able to be determined. This study also establishes the validity of the data collected using the apparatus at Universidade Federal de Juiz de Fora (UFJF) and so provides a solid foundation for further studies of larger alcohols.
Citation:
Electron impact ionisation and fragmentation of methanol and ethanol 2016, 404:48 International Journal of Mass Spectrometry
Publisher:
Elsevier
Journal:
International Journal of Mass Spectrometry, Volume 404 - selected pp. 1-60 (20 June 2016)
Issue Date:
20-Jun-2016
URI:
http://hdl.handle.net/2436/611569
DOI:
10.1016/j.ijms.2016.05.006
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S1387380616300471
Type:
Article
Language:
en
ISSN:
1387-3806
Sponsors:
K.L.N. thanks CNPq for an “Attracting Young Talent Grant” under the “Science Without Borders” program. M.C.A.L. acknowledges financial support from CNPq and FAPEMIG, while M.J.B. thanks CNPq for his “Special Visiting Professor” award. R.F.C.N. and H.V.D. acknowledge CNPq/CAPES/CsF and Flinders University for financial assistance. D.B.J. thanks the ARC for a Discovery Early Career Researcher Award.
Appears in Collections:
FSE

Full metadata record

DC FieldValue Language
dc.contributor.authorNixon, K.L.en
dc.contributor.authorPires, W.A.D.en
dc.contributor.authorNeves, R.F.C.en
dc.contributor.authorDuque, H.V.en
dc.contributor.authorJones, D.B.en
dc.contributor.authorBrunger, M.J.en
dc.contributor.authorLopes, M.C.A.en
dc.date.accessioned2016-06-02T14:11:02Zen
dc.date.available2016-06-02T14:11:02Zen
dc.date.issued2016-06-20en
dc.identifier.citationElectron impact ionisation and fragmentation of methanol and ethanol 2016, 404:48 International Journal of Mass Spectrometryen
dc.identifier.issn1387-3806en
dc.identifier.doi10.1016/j.ijms.2016.05.006en
dc.identifier.urihttp://hdl.handle.net/2436/611569en
dc.description.abstractElectron impact ionisation and dissociative ionisation of the two smallest primary alcohols have been investigated. A quadrupole mass spectrometer was used, with an internal ionising electron source resulting in an energy resolution of ~ 0.8 eV. The partial ionisation cross sections (PICS) for a number of individual cations have been measured for energies between 10 - 100 eV. The present data compares well with previous results for methanol. Surprisingly, however, this study is the first to report individual PICS for ethanol. The sum of the present PICS for both methanol and ethanol is also compared to the total ionisation cross sections reported in the literature and are found to be in good accord. Additionally, appearance energies have been derived by fitting the Wannier equation to data measured within ~ 2 eV of the cation formation threshold. However, the low energy resolution limits the precision with which these values are able to be determined. This study also establishes the validity of the data collected using the apparatus at Universidade Federal de Juiz de Fora (UFJF) and so provides a solid foundation for further studies of larger alcohols.en
dc.description.sponsorshipK.L.N. thanks CNPq for an “Attracting Young Talent Grant” under the “Science Without Borders” program. M.C.A.L. acknowledges financial support from CNPq and FAPEMIG, while M.J.B. thanks CNPq for his “Special Visiting Professor” award. R.F.C.N. and H.V.D. acknowledge CNPq/CAPES/CsF and Flinders University for financial assistance. D.B.J. thanks the ARC for a Discovery Early Career Researcher Award.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S1387380616300471en
dc.rightsArchived with thanks to International Journal of Mass Spectrometryen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectElectron impact ionisationen
dc.subjectPartial ionisation cross sectionsen
dc.subjectmethanolen
dc.subjectethanolen
dc.titleElectron impact ionisation and fragmentation of methanol and ethanolen
dc.typeArticleen
dc.identifier.journalInternational Journal of Mass Spectrometry, Volume 404 - selected pp. 1-60 (20 June 2016)en
dc.date.accepted2016-05-09en
rioxxterms.funderInternalen
rioxxterms.identifier.projectUoW020616KLNen
rioxxterms.versionAMen
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0en
rioxxterms.licenseref.startdate2018-06-19en
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