The relation between ultraviolet-excited fluorescence spectroscopy and aromatic species formed in rich laminar ethylene flames
作者： A Ciajolo , A Tregrossi , R Barbella , R Ragucci , B Apicella
DOI: 10.1016/S0010-2180(01)00242-5
关键词: Fluorescence 、 Premixed flame 、 Adiabatic flame temperature 、 Spectral line 、 Analytical chemistry 、 Fluorescence spectroscopy 、 Chemistry 、 Fluorescence spectrometry 、 Ultraviolet 、 Excited state 、 Photochemistry
摘要: Abstract The exploitation of fluorescence techniques for the characterization aromatic pollutants formed in combustion processes needs a reliable interpretation assignment emission to specific products. To this aim, ultraviolet-excited LIF (laser-induced fluorescence) spectra were measured premixed rich ethylene/oxygen flames having different PAH mass loading as verified by sampling and chomatographic analysis condensed species produced along flames. Fluorescence ultraviolet was mainly found where formation is relatively low indicating that ultraviolet-fluorescence not related species. On opposite, broad visible features became prevalent PAH-rich suggesting could be shifted toward effect high-temperature flame environment. In alternative hypothesis due heavier unidentified part whose visible.
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