oxidized by gas-phase OH radicals, which alter the molecular distribution of the reaction
products within the droplet. A change in aerosol composition affects the hygroscopicity and
leads to a concomitant response in the equilibrium amount of particle-phase water. The
variation in the aerosol water content affects the aerosol size and physicochemical
properties, which in turn governs the oxidation kinetics and chemistry. To attain better …