Summary
Laser-induced fluorescence is introduced as an analytical technique for the detection of particle-bound PAHs, which can be found as a result of most combustion processes. A quartz fiber is used to couple the light of a frequency-doubled excimer-pumped dye laser into the sensor head. The fluorescence light is detected using collecting optics, a set of interference filters and a photomultiplier. PAHs in different forms (crystalline, as homogeneous particles and coated on NaCl particles) were investigated. Fluorescence spectra and time-resolved signals, which exhibit characteristic decay times, are presented.
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Niessner, R., Robers, W. & Krupp, A. Detection of particulate polycyclic aromatic hydrocarbons by laser-induced time-resolved fluorescence. Fresenius J Anal Chem 341, 207–213 (1991). https://doi.org/10.1007/BF00321550
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DOI: https://doi.org/10.1007/BF00321550