Refinement of gas-particle equilibrium partitioning: Detailed SOA composition, viscosity and diffusion measurements

Experimental measurements of diffusion constants within viscous aerosol are limited and do not represent the complex chemical composition observed in SOA (i.e. multicomponent mixtures). Recent literature has suggested that equilibrium partitioning may be kinetically limited, preventing volatilization from the aerosol phase as a result of the physical state of the aerosol (e.g. glassy, viscous). To understand the dynamic mechanisms occurring during SOA growth and evolution, the equilibrium state of the aerosol must be known.