Abstract
AbstractThe applicability of thermal surface ionization in liquid chromatography/particle‐beam mass spectrometry is investigated for the analysis of quaternary ammonium compounds. The compounds are mass anlyzed in a filament‐off mode of operation with a particle‐beam interface. An intense signal of the molecular cations is observed, while fragmentation can be induced by gas collisions and characterized using tandem mass spectrometry. A significant gain in signal‐to‐noise ratio in thermal surface ionization relative to electron ionization is observed.
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