Laser Diagnostics for Selective and Quantitative Measurement of PAHs and Soot

  • Xavier Mercier
  • Alessandro Faccinetto
  • Pascale Desgroux
Chapter
Part of the Green Energy and Technology book series (GREEN)

Abstract

Optical diagnostics are complementary techniques to conventional analytical methods of polycyclic aromatic hydrocarbons (PAH) and soot. They allow the selective and quantitative measurements of PAH concentrations and the determination of the soot volume fraction (\( f_{V} \)) in combustion processes. Due to their complex spectroscopy, selective detection of PAH requires a priori molecular cooling obtained by molecular beam generation strategies. The associated techniques are single or multiphoton ionisation coupled with time-of-flight mass spectrometry (PI/TOF-MS) and jet-cooled laser induced fluorescence (jet-cooled LIF). PI/TOF-MS also allows identifying PAH species adsorbed on soot surface. Laser induced incandescence (LII) and absorption-based techniques are currently used to measure \( f_{V} \). This chapter details the main principles of these relevant spectroscopic techniques: jet-cooled LIF single and multiphoton ionisation coupled with time-of-flight mass spectrometry, laser induced incandescence and soot desorption methods.

Keywords

Combustion Methane Quartz Benzene Attenuation 

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Copyright information

© Springer-Verlag London 2013

Authors and Affiliations

  • Xavier Mercier
    • 1
  • Alessandro Faccinetto
    • 1
  • Pascale Desgroux
    • 1
  1. 1.Physicochimie des Processus de Combustion et de l’Atmosphère (PC2A)UMR Université/CNRS 8522, Université Lille 1 — Sciences et TechnologiesVilleneuve d’Ascq CedexFrance

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