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Pulsed 2‐Dimensional Raman Spectroscopy on Microdroplets
Author(s) -
Moritz H.,
Schweiger G.
Publication year - 2000
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(200004)23:4<361::aid-ceat361>3.0.co;2-g
Subject(s) - acetylene , analytical chemistry (journal) , chemistry , body orifice , raman spectroscopy , aerosol , spectroscopy , phase (matter) , dispersity , resolution (logic) , acetone , chromatography , optics , ecology , physics , organic chemistry , quantum mechanics , artificial intelligence , computer science , biology
In this study, we used a technique based on pulsed Raman spectroscopy to determine the average concentration in the liquid phase and concentration distribution in the gas phase surrounding desorbing linear arrays of binary microdroplets. For this study, monodisperse microdroplets consisting of acetylene dissolved in acetone were generated by a modified vibrating orifice aerosol generator (VOAG). The 2‐dimensional concentration fields of acetylene desorbed from the droplets were determined with a spatial resolution of about 40 μm both along the direction of the droplet chain and perpendicular to it. The detection limits for the gas and liquid phase concentrations were about 100 ppm and 1 mmol/l, respectively.