Synchrotron Photoionization Mass Spectrometry Measurements of Product Formation in Low-Temperature n-Butane Oxidation: Toward a Fundamental Understanding of Autoignition Chemistry and n-C4H9 + O2/s-C4H9 + O2 Reactions

2013 ◽  
Vol 117 (47) ◽  
pp. 12216-12235 ◽  
Author(s):  
Arkke J. Eskola ◽  
Oliver Welz ◽  
John D. Savee ◽  
David L. Osborn ◽  
Craig A. Taatjes
Keyword(s):  
Mass Spectrometry ◽  
Low Temperature ◽  
Product Formation ◽  
Butane Oxidation ◽  
Photoionization Mass Spectrometry ◽  
Fundamental Understanding

Synchrotron Photoionization Mass Spectrometry Measurements of Kinetics and Product Formation in the Allyl Radical (H2CCHCH2) Self-Reaction†

2008 ◽  
Vol 112 (39) ◽  
pp. 9366-9373 ◽  
Author(s):  
Talitha M. Selby ◽  
Giovanni Meloni ◽  
Fabien Goulay ◽  
Stephen R. Leone ◽  
Askar Fahr ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Product Formation ◽  
Allyl Radical ◽  
Photoionization Mass Spectrometry

scholarly journals New Insights into Low-Temperature Oxidation of Propane from Synchrotron Photoionization Mass Spectrometry and Multiscale Informatics Modeling

2015 ◽  
Vol 119 (28) ◽  
pp. 7116-7129 ◽  
Author(s):  
Oliver Welz ◽  
Michael P. Burke ◽  
Ivan O. Antonov ◽  
C. Franklin Goldsmith ◽  
John D. Savee ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Low Temperature ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Photoionization Mass Spectrometry

scholarly journals Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andreas Kiontke ◽  
Mehrzad Roudini ◽  
Susan Billig ◽  
Amarghan Fakhfouri ◽  
Andreas Winkler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Low Temperature ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Ionization Mechanism ◽  
Low Temperature Plasma ◽  
Ambient Conditions ◽  
Temperature Plasma ◽  
Plasma Ionization ◽  
Surface Acoustic Wave Nebulization

AbstractMass spectrometry coupled to low-temperature plasma ionization (LTPI) allows for immediate and easy analysis of compounds from the surface of a sample at ambient conditions. The efficiency of this process, however, strongly depends on the successful desorption of the analyte from the surface to the gas phase. Whilst conventional sample heating can improve analyte desorption, heating is not desirable with respect to the stability of thermally labile analytes. In this study using aromatic amines as model compounds, we demonstrate that (1) surface acoustic wave nebulization (SAWN) can significantly improve compound desorption for LTPI without heating the sample. Furthermore, (2) SAWN-assisted LTPI shows a response enhancement up to a factor of 8 for polar compounds such as aminophenols and phenylenediamines suggesting a paradigm shift in the ionization mechanism. Additional assets of the new technique demonstrated here are (3) a reduced analyte selectivity (the interquartile range of the response decreased by a factor of 7)—a significant benefit in non-targeted analysis of complex samples—and (4) the possibility for automated online monitoring using an autosampler. Finally, (5) the small size of the microfluidic SAWN-chip enables the implementation of the method into miniaturized, mobile LTPI probes.

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