Summary
Ionisation of small molecules via ion-molecule reactions (IMR) offers the possibility to reduce fragmentation caused by high energy electron impact ionisation. Widely varying rate constants for the IMR processes allow to introduce additional species selectivity together with the mass selection in a quadrupole system. A comparison between low energy electron impact ionisation and IMR illustrates the potential of this new ionisation method in gas analysis applications.
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Tegtmeyer, U., Weiss, H.P. & Schlögl, R. Gas analysis by IMR-MS: a comparison to conventional mass spectrometry. Fresenius J Anal Chem 347, 263–268 (1993). https://doi.org/10.1007/BF00323969
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DOI: https://doi.org/10.1007/BF00323969