Multiphase Processing of the Water-Soluble and Insoluble Phases of Biomass Burning Organic Aerosol.

ABSTRACT: Biomass burning is one of the most significant sources of organic aerosol in the atmosphere. Biomass burning organic aerosol (BBOA) has been observed to undergo liquid-liquid phase separation (LLPS) to give core-shell morphology with the hydrophobic phase encapsulating the hydrophilic phase, potentially impacting the evolution of light-absorbing components, i.e., brown carbon (BrC), through multiphase processes. Here, we demonstrate how multiphase processing differs between the water-soluble (i.e., hydrophilic) and insoluble (i.e., hydrophobic) phases of BBOA in terms of reactive uptake of ozone in a coated-wall flow tube. Effects of relative humidity (RH) and ultraviolet (UV) irradiation were investigated. Experimental timeseries were used to inform simulations using multilayer kinetic mo

SUBMITTER: Al-Mashala HH 

PROVIDER: S-EPMC11997950 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature