Sulfur Dioxide Fluorescence Imaging
Bernd Jähne,
Rada Beronova,
Kerstin E. Krall
Kapitel/Beitrag aus dem Buch: Beyerer, J et al. 2023. OCM 2023 - 6th International Conference on Optical Characterization of Materials, March 22nd – 23rd, 2023, Karlsruhe, Germany : Conference Proceedings.
Sulfur dioxide is an ideal tracer to study the partitioning
of the resistance of gas transfer across the water interface
between air and water because the pH value in water controls
the effective solubility of sulfur dioxide. Friman and J¨ahne [1]
already demonstrated that it is possible to measure sulfur dioxide
concentration profiles with laser induced fluorescence (LIF),
but the best excitation wavelength under standard atmospheric
conditions was not known. Here, we report the result of our
investigation to select the best excitation wavelength for sulfur
dioxide fluorescence to reach maximum intensity with the lowest
possible absorption.