Characterization of volatile organic compounds and submicron organic aerosol in a traffic environment

Urban air consists of a complex mixture of gaseous and particulate species from anthropogenic and biogenic sources that are further processed in the atmosphere. This study investigated the characteristics and sources of volatile organic compounds (VOCs) and submicron organic aerosol (OA) in a traffi...

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Bibliographic Details
Published in:Atmospheric chemistry and physics 2023-03, Vol.23 (5), p.2963-2982
Main Authors: Saarikoski, Sanna, Hellén, Heidi, Praplan, Arnaud P, Schallhart, Simon, Clusius, Petri, Niemi, Jarkko V, Kousa, Anu, Tykkä, Toni, Kouznetsov, Rostislav, Aurela, Minna, Salo, Laura, Rönkkö, Topi, Barreira, Luis M. F, Pirjola, Liisa, Timonen, Hilkka
Format: Article
Language:English
Subjects:
Aerosol formation
Aerosols
Aging
Air
Air pollution
Air quality
Analysis
Anthropogenic factors
Aromatic compounds
Aromatic hydrocarbons
Atmosphere
Automotive emissions
Biogenic emissions
Coffee
Emissions
Gas chromatography
Human influences
Hydrocarbons
Long-range transport
Mass
Mass spectrometers
Mass spectrometry
Measurement
Organic compounds
Outdoor air quality
Oxidants
Oxidation
Oxidizing agents
Oxygenation
Particulate emissions
Pollutants
Secondary aerosols
Size distribution
Terpenes
Toluene
Traffic
Transport
Urban air
Urban areas
Valence
Vehicle emissions
VOCs
Volatile organic compounds
Volatility
Xylene
α-Pinene
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Summary:Urban air consists of a complex mixture of gaseous and particulate species from anthropogenic and biogenic sources that are further processed in the atmosphere. This study investigated the characteristics and sources of volatile organic compounds (VOCs) and submicron organic aerosol (OA) in a traffic environment in Helsinki, Finland, in late summer. The anthropogenic VOCs (aVOCs; aromatic hydrocarbons) and biogenic VOCs (bVOCs; terpenoids) relevant for secondary-organic-aerosol formation were analyzed with an online gas chromatograph mass spectrometer, whereas the composition and size distribution of submicron particles was measured with a soot particle aerosol mass spectrometer.
ISSN:1680-7324
1680-7316
1680-7324
DOI:10.5194/acp-23-2963-2023