Chemical composition of secondary organic aerosol particles formed from mixtures of anthropogenic and biogenic precursors
Abstract α o x and ammonium sulfate seed particles. Several online techniques (HR-ToF-AMS, semi-continuous GC-MS, NOx and O3 analyser) were coupled to the MAC to monitor the gas and particle mass concentrations. Secondary organic aerosol (SOA) particles were collected onto a quartz-fibre filter at the end of each experiment and analysed using liquid chromatography–ultrahigh-resolution mass spectrometry (LC-Orbitrap MS). The SOA particle chemical composition in single and mixed precursor systems was investigated using non-targeted accurate mass analysis of measurements in both negative and positive ionization modes, significantly reducing data complexity and analysis time, thereby providing a more complete assessment of the chemical composition. This non-targeted analysis is not widely used in environmental science and has never been previously used in atmospheric simulation chamber studies. Products from α α α 7 H7 NO4) and methyl-nitrophenol (C7 H7 NO3) from o o o α o 9 H11 NO and C8 H8 O10 made large signal contributions in the o o α 20 H31 NO4 and C20 H30 O3) uniquely found in the mixture. The SOA particle chemical composition formed in the ternary system is more complex. The molecular composition and signal abundance are both markedly similar to those in the single α o -cresol products in negative ionization mode.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Chemical composition of secondary organic aerosol particles formed from mixtures of anthropogenic and biogenic precursors ; volume:22 ; number:15 ; year:2022 ; pages:9799-9826 ; extent:28
Atmospheric chemistry and physics ; 22, Heft 15 (2022), 9799-9826 (gesamt 28)
- Urheber
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Shao, Yunqi
Voliotis, Aristeidis
Du, Mao
Wang, Yu
Pereira, Kelly
Hamilton, Jacqueline
Alfarra, Rami
McFiggans, Gordon
- DOI
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10.5194/acp-22-9799-2022
- URN
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urn:nbn:de:101:1-2022080405144774934846
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:26 MESZ
Datenpartner
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Beteiligte
- Shao, Yunqi
- Voliotis, Aristeidis
- Du, Mao
- Wang, Yu
- Pereira, Kelly
- Hamilton, Jacqueline
- Alfarra, Rami
- McFiggans, Gordon
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