Secondary aerosol formation during the dark oxidation of residential biomass burning emissions.

ABSTRACT: 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^-3 of secondary organic aerosol (5-80% increase over the fresh organic aerosol) after 30 min of exposure to NO₃ radicals in the chamber (corresponding to 1-3 h of exposure to typical nighttime NO₃ radical concentrations in an urban e

SUBMITTER: Kodros JK 

PROVIDER: S-EPMC9476557 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature