Measurement report: Biogenic volatile organic compound emission profiles of rapeseed leaf litter and its secondary organic aerosol formation potential
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Published:2021-08-24
Issue:16
Volume:21
Page:12613-12629
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ISSN:1680-7324
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Container-title:Atmospheric Chemistry and Physics
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language:en
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Short-container-title:Atmos. Chem. Phys.
Author:
Abis LetiziaORCID, Kalalian CarmenORCID, Lunardelli Bastien, Wang Tao, Zhang LiwuORCID, Chen JianminORCID, Perrier Sébastien, Loubet Benjamin, Ciuraru Raluca, George ChristianORCID
Abstract
Abstract. We analysed the biogenic volatile organic compound (BVOC)
emissions from rapeseed leaf litter and their potential to create secondary
organic aerosols (SOAs) under three different conditions, i.e., (i) in the
presence of UV light irradiation, (ii) in the presence of ozone, and (iii) with
both ozone and UV light. These experiments were performed in a controlled
atmospheric simulation chamber containing leaf litter samples, where BVOC
and aerosol number concentrations were measured for 6 d. Our results
show that BVOC emission profiles were affected by UV light irradiation which
increased the summed BVOC emissions compared to the experiment with solely
O3. Furthermore, the diversity of emitted VOCs from the rapeseed litter
also increased in the presence of UV light irradiation. SOA formation was
observed when leaf litter was exposed to both UV light and O3,
indicating a potential contribution to particle formation or growth at local
scales. To our knowledge, this study investigates, for the first time, the
effect of UV irradiation and O3 exposure on both VOC emissions and SOA
formation for leaf litter samples. A detailed discussion about the processes
behind the biological production of the most important VOC is proposed.
Funder
Agence de l'Environnement et de la Maîtrise de l'Energie Horizon 2020 Framework Programme
Publisher
Copernicus GmbH
Subject
Atmospheric Science
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