Direct imaging of changes in aerosol particle viscosity upon hydration and chemical aging.

ABSTRACT: Organic aerosol particles (OA) play major roles in atmospheric chemistry, climate, and public health. Aerosol particle viscosity is highly important since it can determine the ability of chemical species such as oxidants, organics or water to diffuse into the particle bulk. Recent measurements indicate that OA may be present in highly viscous states, however, diffusion rates of small molecules such as water are not limited by these high viscosities. Direct observational evidence of kinetic barriers caused by high viscosity and low diffusivity in aerosol particles were not available until recently; and techniques that are able to dynamically quantify and track viscosity changes during atmospherically relevant processes are still unavailable for atmospheric aerosols. Here we report quantitat

SUBMITTER: Hosny NA 

PROVIDER: S-EPMC5975791 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature