Indirect hydrogen monitoring by chemi-ionisation following an associative ionisation pathway after metastable helium atoms production by electron impact ionisation: Protonation and deuteration of carrier gas

Détails

ID Serval
serval:BIB_838796B08185
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Indirect hydrogen monitoring by chemi-ionisation following an associative ionisation pathway after metastable helium atoms production by electron impact ionisation: Protonation and deuteration of carrier gas
Périodique
International Journal of Mass Spectrometry
Auteur(s)
Varlet V., Guiliani N., Augsburger M.
ISSN
1387-3806
ISSN-L
1387-3806
Statut éditorial
Publié
Date de publication
2015
Peer-reviewed
Oui
Volume
376
Pages
27-31
Langue
anglais
Résumé
Gas chromatography (GC) is an analytical tool very useful to investigate the composition of gaseous mixtures. However, hydrogen (H2) detection after a GC separation is only possible with a Thermal Conductivity Detector (TCD), a Helium Ionisation Detector (HID) or expensive Atomic Emission Detector (AED). Recently, indirect H2 detection by GC coupled to mass spectrometry (MS) was demonstrated but the mechanism of carrier gas protonation remained unclear. With electron impact as ionisation source of MS and helium (He) as GC carrier gas, H2 is not ionised according the expected Penning ionisation neither according to the Associative ionisation. Rearrangement ionisation (RI) was found to be the main channel for H2 and D2 ionisation under GC-MS conditions used in most of laboratories using GC-MS, leading to the formation of [He−H]+ and [He−D]+ ions.
Web of science
Création de la notice
07/01/2015 13:13
Dernière modification de la notice
20/08/2019 15:43
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