A Comparative Study of Different Methods for the Sampling of High Temperature Combustion Aerosols

摘要: Three different probes, respectively based on aerodynamic quenching, N2 dilution, and thermophoresis, were used for particle sampling in biomass postcombustion gases from a laboratory reactor at temperatures (from 1300 to 560°C). The artifacts caused by the use of each probe identified compared. While classical dilution resulted formation (inside probe) particles comparable size composition those already existing sampled gases, quenching (AQPS) always nucleation vapors into very small (15–20 nm) particles. difference is attributed much higher cooling rate (∼ 108 K/s) entrance probe. preliminary results thermophoretic also reveal significant deviations between collected sample actual population gas. In general, shown here highlight difficulties obtaining representative samples this t...