Preprints
https://doi.org/10.5194/amt-2021-345
https://doi.org/10.5194/amt-2021-345

  18 Nov 2021

18 Nov 2021

Review status: this preprint is currently under review for the journal AMT.

Characterization of the MISG soot generator with an atmospheric simulation chamber

Virginia Vernocchi1,2, Marco Brunoldi1,2, Silvia Giulia Danelli1,2, Franco Parodi2, Paolo Prati1,2, and Dario Massabò1,2 Virginia Vernocchi et al.
  • 1Dipartimento di Fisica - Università di Genova, via Dodecaneso 33, 16146, Genova (Italy)
  • 2INFN – Sezione di Genova, via Dodecaneso 33, 16146, Genova (Italy)

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 of soot particles generated by ethylene and propane combustion.

Starting from an extensive classification of combustion conditions and resulting flame shapes, the MISG exhaust was characterized in terms of concentration of emitted particles and gases, particle size distribution and optical properties. Soot particles were also collected on quartz fibre filters and then analysed by optical and thermal-optical techniques, to measure the spectral dependence of the absorption coefficient b_abs, and their composition in terms of Elemental and Organic Carbon (EC and OC). Significant differences could be observed when the MISG is fuelled with ethylene and propane both in terms of particle size and optical behaviour (i.e., absorption coefficient). Values of the Mass Absorption Coefficient (MAC) and of the Angstrom Absorption Exponent (AAE) turned out to be compatible with the literature, even if with some specific difference.

The comprehensive characterization of the MISG soot particles is an important piece of information to design and perform experiments in atmospheric simulation chambers.

Virginia Vernocchi et al.

Status: open (until 28 Dec 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-345', Anonymous Referee #1, 07 Dec 2021 reply

Virginia Vernocchi et al.

Virginia Vernocchi et al.

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Short summary
The performance of a Mini-Inverted Soot Generator has been investigated at a simulation chamber facility by studying soot generated by ethylene and propane combustion: number, size , optical properties and EC/OC concentrations. Mass absorption coefficients and Angstrom absorption exponents are compatible with literature, with some specific differences. The characterization of MISG soot particles is fundamental to design and perform experiments in atmospheric simulation chambers.