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Contribution of Fine Particles to Air Emission at Different Phases of Biomass Burning

School of Engineering and Built Environment, Griffith University, Nathan 4111, Queensland, Australia
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Atmosphere 2019, 10(5), 278; https://doi.org/10.3390/atmos10050278
Received: 16 April 2019 / Revised: 10 May 2019 / Accepted: 14 May 2019 / Published: 16 May 2019
(This article belongs to the Special Issue Biomass Burning and Their Impacts)
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Abstract

Particle size distribution in biomass smoke was observed for different burning phases, including flaming and smouldering, during the combustion of nine common Australian vegetation representatives. Smoke particles generated during the smouldering phase of combustions were found to be coarser as compared to flaming aerosols for all hard species. In contrast, for leafy species, this trend was inversed. In addition, the combustion process was investigated over the entire duration of burning by acquiring data with one second time resolution for all nine species. Particles were separately characterised in two categories: fine particles with dominating diffusion properties measurable with diffusion-based instruments (Dp < 200 nm), and coarse particles with dominating inertia (Dp > 200 nm). It was found that fine particles contribute to more than 90 percent of the total fresh smoke particles for all investigated species. View Full-Text
Keywords: fine particles; combustion aerosols; biomass burning; aerosol emission from bushfires fine particles; combustion aerosols; biomass burning; aerosol emission from bushfires
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ordou, N.; Agranovski, I.E. Contribution of Fine Particles to Air Emission at Different Phases of Biomass Burning. Atmosphere 2019, 10, 278.

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