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Probing Phase States of Individual Sub-micron Particles at Various Relative Humidity and Temperature


EMSL Project ID
50705

Abstract

The viscosity of organic aerosols is a pivotal property to predict their health and environmental impact. Viscosity influences particle growth rate, diffusivity, chemical reactivity, and impacts the long-range transport of pollutants. The viscosity of particles is strongly dependent on relative humidity and temperature. Submicron size organic aerosol dominate aerosol population, however, current techniques are limited by a narrow range of viscosity or particle size (>20µm). We propose to develop a novel platform integrated in environmental scanning electron microscope to probe viscosity of field collected individual submicron particles as a function of temperature and relative humidity.

Project Details

Start Date
2019-01-21
End Date
2019-09-30
Status
Closed

Team

Principal Investigator

Libor Kovarik
Institution
Pacific Northwest National Laboratory

Team Members

Swarup China
Institution
Environmental Molecular Sciences Laboratory