“On-Line” and “In Situ” Measurement of PAH in Exhaust Gases with the Newly Developed ATLAS Life Sensor System

Abstract

The continuous detection of polycyclic aromatic hydrocarbons (PAH) is an important task for efficient environmental protection. STN ATLAS Elektronik is developing a fully automated sensor system for registration of different gaseous and particle bound PAH in stack gases of combustion processes. As measuring principle, laser-induced fluorescence analysis is used. Two parameters, the decay time and the wavelength of the fluorescence are recorded and evaluated for the classification of the different PAH. The sensor system and the newly implemented data analysis are described. Results of measurements in the exhaust gases of different industrial plants are revealed.

Key Words:

• Laser-induced fluorescence
• time-resolved fluorescence analysis
• environmental sensor
• fibre optical sensor
• PAH “on-line” sensor system