Ralph Dorfner

On-Line Emission Analysis of Polycyclic Aromatic Hydrocarbons down to pptv Concentration Levels in the Flue Gas of an Incineration Pilot Plant with a Mobile Resonance-Enhanced Multiphoton Ionization Time-of-Flight Mass Spectrometer

Hans Jörg Heger, Ralf Zimmermann, Ralph Dorfner et al. · Analytical Chemistry · 1998 · 161 citations

Real-Time Monitoring of 4-Vinylguaiacol, Guaiacol, and Phenol during Coffee Roasting by Resonant Laser Ionization Time-of-Flight Mass Spectrometry

Ralph Dorfner, T. Ferge, Antonius Kettrup et al. · Journal of Agricultural and Food Chemistry · 2003 · 127 citations

Laser Mass Spectrometry as On-Line Sensor for Industrial Process Analysis:  Process Control of Coffee Roasting

Ralph Dorfner, T. Ferge, Chahan Yeretzian et al. · Analytical Chemistry · 2004 · 120 citations

On-line measurement of chlorobenzene in waste incineration flue gas as a surrogate for the emission of polychlorinated dibenzo-p-dioxins/furans (I-TEQ) using mobile resonance laser ionization time-of-flight mass spectrometry

Ralf Zimmermann, Hans Jörg Heger, M. Blumenstock et al. · Rapid Communications in Mass Spectrometry · 1999 · 72 citations

On-line Measurement, Engineering, Indicator Relation +22

A Capillary-Based Supersonic Jet Inlet System for Resonance-Enhanced Laser Ionization Mass Spectrometry:  Principle and First On-line Process Analytical Applications

Klaus Häfner, Ralf Zimmermann, Egmont R. Rohwer et al. · Analytical Chemistry · 2001 · 58 citations

Chemical Engineering, Molecular Spectroscopy, Engineering +15