Publications by authors named "Christina Vasilakopoulou"
Article Synopsis
- - The study examines how secondary organic aerosol (SOA) is produced from volatile organic compounds (VOCs) and intermediate volatility organic compounds (IVOCs) reacting with hydroxyl radicals, particularly under high nitrogen oxide (NO) conditions.
- - It focuses on various organic compounds, primarily cyclic alkanes and aromatic compounds, discovering that larger cyclohexanes generate more SOA than aromatics, but the latter create a more oxidized aerosol due to their oxidation products.
- - The research highlights the importance of factors like molecular structure, size, and substituent chain length on SOA characteristics and proposes new parameters for better modeling of aerosol behavior in future chemical transport models.
Particulate matter from biomass burning emissions affects air quality, ecosystems and climate; however, quantifying these effects requires that the connection between primary emissions and secondary aerosol production is firmly established. We performed atmospheric simulation chamber experiments on the chemical oxidation of residential biomass burning emissions under dark conditions. Biomass burning organic aerosol was found to age under dark conditions, with its oxygen-to-carbon ratio increasing by 7-34% and producing 1-38 μg m of secondary organic aerosol (5-80% increase over the fresh organic aerosol) after 30 min of exposure to NO radicals in the chamber (corresponding to 1-3 h of exposure to typical nighttime NO radical concentrations in an urban environment).
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