This work presents a laser spectroscopy based method to detect very small amounts of acidic molecules in concentrations down to 10 ppm. The proposed method relies on the sensitivity to acids of a fluorescent dye, which is used as the active material in a stimulated laser emission experiment. Using a cuvette, that works as a resonator, laser emission from a dye doped mixture can be observed. When an acidic species is added to the mixture, due to the solvatochromic effect, the spectral position of fluorescence shifts and, consequently, a shift in the emitted laser wavelength is observed. From the analysis of the laser lines the presence of a specific acid species and its concentration can be determined.
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|Titolo:||A laser spectroscopy based method for the detection of acidic compounds in solution|
DE SANTO, Maria Penelope [Membro del Collaboration Group] (Corresponding)
BARBERI, Riccardo Cristoforo [Membro del Collaboration Group]
|Data di pubblicazione:||2017|
|Appare nelle tipologie:||1.1 Articolo in rivista|