NDLI: An NO$^{+}$ reactant ion source for ion mobility spectrometry

Content Provider	Springer Nature Link
Author	Darzi, Maedeh Tabrizchi, Mahmoud
Copyright Year	2013
Abstract	The major reactant ion in conventional ion mobility spectrometry (IMS) is the hydronium ion, H$_{3}$O$^{+}$ which is produced in the usual ionization sources such as corona discharge or radioactive sources. Using the hydronium reactant ion, mostly the analytes with proton affinity higher than that of water are ionized. A broader range of compounds can be detected by IMS if other alternative ionization channels, such as charge transfer from NO$^{+}$, are employed. In this work we introduce a simple and novel method for producing NO$^{+}$ as the major reactant ion in IMS. This was achieved by adding neutral NO to the corona discharge ionization source. The neutral NO was prepared via an additional discharge in an air stream, flowing into the corona discharge source. A curtain plate was mounted in front of the corona discharge to prevent the influence of the analyte on the production of NO$^{+}$. Using this technique, the reactant ion could easily and quickly switch between the H$_{3}$O$^{+}$ and NO$^{+}$. The performance of the new source was evaluated by recording ion mobility spectra of test compounds with both H$_{3}$O$^{+}$ and NO$^{+}$ reactant ions.
Starting Page	275
Ending Page	280
Page Count	6
File Format	PDF
ISSN	14356163
Journal	International Journal for Ion Mobility Spectrometry
Volume Number	16
Issue Number	4
e-ISSN	18654584
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-05-30
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	NO$^{+}$ Reactant ion Ion mobility spectrometry Ionization source Analytical Chemistry Physical Chemistry Molecular Medicine Proteomics Ecotoxicology Safety in Chemistry, Dangerous Goods
Content Type	Text
Resource Type	Article
Subject	Spectroscopy

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