Speaker
Maximilian Münst
(Universität Innsbruck)
Description
Proton transfer reactions (PTR) are a useful means to detect volatile organic compounds in the atmosphere. By replacing the commonly used H$_3$O$^+$ with N$_2$H$^+$ or ArH$^+$ as the primary ion, an additional range of molecules becomes accessible for protonation, making PTR suitable for ultra-high purity (UHP) gas analysis.
Utilizing Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry, reaction kinetics of N$_2$H$^+$ and ArH$^+$ with O$_2$, H$_2$O, CH$_4$, NO$_2$, CH$_3$OH, and C$_3$H$_6$O are recorded and reaction rate constants derived, revealing efficient proton transfer to the probed substances. This is in agreement with the proton affinities from quantum chemical calculations.
Authors
Maximilian Münst
(Universität Innsbruck)
Dr
Erik Barwa
(Universität Innsbruck)
Prof.
Martin Beyer
(University of Innsbruck)