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Article Dans Une Revue International Journal of Mass Spectrometry Année : 2014

Penning ionization-FT-ICR: Application to diesel fuel analysis

Résumé

The Penning ionization (PeI) source uses atoms of rare gases or molecules (N2) excited to give a flux of metastable atoms or molecules (A*) able by collision to ionize a target molecule (M) on the condition that the process is exothermic (i.e., IE(M) < EE(A)). As electron ionization, PeI allows the ionization of apolar species such as saturated hydrocarbons yielding molecular ions. In this work we present the application of vacuum PeI source coupled with a FT-ICR instrument for the characterization of a diesel fuel. Argon and krypton, as metastable gas, allow reducing significantly the fragmentation extent compared to electron ionization. Unlike with an atmospheric pressure source, the use of a vacuum source allows a good control of the ionization conditions with the absence of oxygen or other reactant such as water.
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Dates et versions

hal-01107945 , version 1 (21-01-2015)

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Clotilde Le Vot, Carlos Afonso, Claude Beaugrand, Jean-Claude Tabet. Penning ionization-FT-ICR: Application to diesel fuel analysis. International Journal of Mass Spectrometry, 2014, 367, pp.35-42. ⟨10.1016/j.ijms.2014.05.002⟩. ⟨hal-01107945⟩
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