Characterization of soot produced by the mini inverted soot generator with an atmospheric simulation chamber

Abstract. The performance of a mini inverted soot generator (MISG) has been investigated at ChAMBRe (Chamber for Aerosol Modelling and Bio-aerosol Research) by studying the properties particles generated ethylene propane combustion. This work deepens expands existing characterization MISG, which also exploits an atmospheric simulation chamber (ASC). Different from previous works, MISG tested different fuel flows higher global equivalence ratios. exhausts were after their injection inside chamber, is another novelty this work. Starting extensive classification combustion conditions resulting flame shapes, exhaust was characterized in terms concentration emitted gases, particle size distribution, optical properties. Soot collected on quartz fibre filters then analysed thermal–optical techniques to measure spectral dependence absorption coefficient babs​​​​​​​ composition elemental carbon organic (EC OC). Significant differences could be observed when fuelled with size. In particular, production super-micrometric aggregates With equal conditions, produced number smaller mode diameters. resulted EC : TC (total carbon) ratios they more light absorbing than Values mass cross section (MAC) Ångström exponent (AAE) turned out compatible literature, even if there some specific differences. comprehensive important piece information design perform experiments chambers. Particles well-known can used, example, investigate possible interactions between other pollutants, effects meteorological variables properties, oxidative toxicological potential particles.