High-temperature vapor detection of polycyclic aromatic hydrocarbon fluorescence

✍ Scribed by Zhenhuan Chi; Brian M. Cullum; David L. Stokes; Joel Mobley; Gordon H. Miller; Mohammad R. Hajaligol; Tuan Vo-Dinh

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 159 KB
• Volume: 80
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/s0016-2361(01)00065-5

✦ Synopsis

Polycyclic aromatic hydrocarbons (PAHs) are generated from the incomplete combustion of organic matters in a wide variety of natural and man-made materials, such as fuels. It is important to develop an analytical technique for rapidly monitoring PAH generation at high temperatures during pyrolysis processes. This work describes a real-time and in situ technique using laser-induced ¯uorescence to detect PAH vapors at elevated temperatures. We report ¯uorescence spectra of several typical PAH model compounds, such as pyrene, phenanthrene and chrysene. We have also examined the temperature effects on PAH ¯uorescence spectra such as spectral shift, intensity and band width.