Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions
<p>Many recent secondary organic aerosol (SOA) studies mainly focus on biogenic SOA particles formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions and thus are applicable to pristine environments with minor anthropo...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/23/203/2023/acp-23-203-2023.pdf |
| _version_ | 1797960583714177024 |
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| author | Z. Li A. Buchholz L. M. F. Barreira L. M. F. Barreira A. Ylisirniö L. Hao I. Pullinen S. Schobesberger A. Virtanen |
| author_facet | Z. Li A. Buchholz L. M. F. Barreira L. M. F. Barreira A. Ylisirniö L. Hao I. Pullinen S. Schobesberger A. Virtanen |
| author_sort | Z. Li |
| collection | DOAJ |
| description | <p>Many recent secondary organic aerosol (SOA) studies mainly focus on biogenic SOA particles formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions and thus are applicable to pristine environments with minor anthropogenic influence. Although interactions between biogenic volatile organic compounds and NO<span class="inline-formula"><sub><i>x</i></sub></span> are important in, for instance, suburban areas, there is still a lack of knowledge about the volatility and processes controlling the evaporation of biogenic SOA particles formed in the presence of high concentrations of NO<span class="inline-formula"><sub><i>x</i></sub></span>. Here we provide detailed insights into the isothermal evaporation of <span class="inline-formula"><i>α</i></span>-pinene SOA particles that were formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> and high NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions to investigate the evaporation process and the evolution of particle composition during the evaporation in more detail. We coupled Filter Inlet for Gases and AEROsols-Chemical Ionization Mass Spectrometer (FIGAERO-CIMS) measurements of the molecular composition and volatility of the particle phase with isothermal evaporation experiments conducted under a range of relative humidity (RH) conditions from low RH (<span class="inline-formula"><7</span> % RH) to high RH (80 % RH). Very similar changes were observed in particle volatility at any set RH during isothermal evaporation for the <span class="inline-formula"><i>α</i></span>-pinene SOA particles formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> and high NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions. However, there were distinct differences in the initial composition of the two SOA types, possibly due to the influence of NO<span class="inline-formula"><sub><i>x</i></sub></span> on the RO<span class="inline-formula"><sub>2</sub></span> chemistry during SOA formation. Such compositional differences consequently impacted the primary type of aqueous-phase processes in each type of SOA particle in the presence of particulate water.</p> |
| first_indexed | 2024-04-11T00:47:31Z |
| format | Article |
| id | doaj.art-1ac62039b3124dc9be2ff80242b679a4 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-04-11T00:47:31Z |
| publishDate | 2023-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-1ac62039b3124dc9be2ff80242b679a42023-01-05T13:05:15ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242023-01-012320322010.5194/acp-23-203-2023Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditionsZ. Li0A. Buchholz1L. M. F. Barreira2L. M. F. Barreira3A. Ylisirniö4L. Hao5I. Pullinen6S. Schobesberger7A. Virtanen8Department of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandAtmospheric Composition Research, Finnish Meteorological Institute, Helsinki, FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,FinlandDepartment of Applied Physics, University of Eastern Finland, Kuopio,Finland<p>Many recent secondary organic aerosol (SOA) studies mainly focus on biogenic SOA particles formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions and thus are applicable to pristine environments with minor anthropogenic influence. Although interactions between biogenic volatile organic compounds and NO<span class="inline-formula"><sub><i>x</i></sub></span> are important in, for instance, suburban areas, there is still a lack of knowledge about the volatility and processes controlling the evaporation of biogenic SOA particles formed in the presence of high concentrations of NO<span class="inline-formula"><sub><i>x</i></sub></span>. Here we provide detailed insights into the isothermal evaporation of <span class="inline-formula"><i>α</i></span>-pinene SOA particles that were formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> and high NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions to investigate the evaporation process and the evolution of particle composition during the evaporation in more detail. We coupled Filter Inlet for Gases and AEROsols-Chemical Ionization Mass Spectrometer (FIGAERO-CIMS) measurements of the molecular composition and volatility of the particle phase with isothermal evaporation experiments conducted under a range of relative humidity (RH) conditions from low RH (<span class="inline-formula"><7</span> % RH) to high RH (80 % RH). Very similar changes were observed in particle volatility at any set RH during isothermal evaporation for the <span class="inline-formula"><i>α</i></span>-pinene SOA particles formed under low NO<span class="inline-formula"><sub><i>x</i></sub></span> and high NO<span class="inline-formula"><sub><i>x</i></sub></span> conditions. However, there were distinct differences in the initial composition of the two SOA types, possibly due to the influence of NO<span class="inline-formula"><sub><i>x</i></sub></span> on the RO<span class="inline-formula"><sub>2</sub></span> chemistry during SOA formation. Such compositional differences consequently impacted the primary type of aqueous-phase processes in each type of SOA particle in the presence of particulate water.</p>https://acp.copernicus.org/articles/23/203/2023/acp-23-203-2023.pdf |
| spellingShingle | Z. Li A. Buchholz L. M. F. Barreira L. M. F. Barreira A. Ylisirniö L. Hao I. Pullinen S. Schobesberger A. Virtanen Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions Atmospheric Chemistry and Physics |
| title | Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions |
| title_full | Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions |
| title_fullStr | Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions |
| title_full_unstemmed | Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions |
| title_short | Isothermal evaporation of <i>α</i>-pinene secondary organic aerosol particles formed under low NO<sub><i>x</i></sub> and high NO<sub><i>x</i></sub> conditions |
| title_sort | isothermal evaporation of i α i pinene secondary organic aerosol particles formed under low no sub i x i sub and high no sub i x i sub conditions |
| url | https://acp.copernicus.org/articles/23/203/2023/acp-23-203-2023.pdf |
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