Fiber Optical Sensor System Using A Tunable Laser For Detection Of PAHs On Particles And In Water
- 13 February 1990
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- p. 145-156
- https://doi.org/10.1117/12.963184
Abstract
Laser-induced fluorescence is introduced as an analytical technique for the detection of particle-bond 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, in solution, as homogeneous particles and coated on NaCl particles) were investigated. Fluorescence spectra and time-resolved signals, which exhibit characteristic decay times, are presented.Keywords
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