Analytical Chemistry Seminar: Shuichi Ushijima
Analytical & Environmental Chemistry Division and Atmospheric Chemistry Program Seminar
Jointly sponsored by the Department of Chemistry and Biochemistry, CIRES, and the Environmental Program
Heterogeneous Efflorescence by Mineral Dust Particles
by Shuichi Ushijima - Department of Chemistry and Biochemistry, University of Colorado Boulder
One of the key factors that determines particle growth and heterogeneous reaction efficiency of aerosols is whether the particle is liquid or solid. Salt aerosols transition between these phases through efflorescence and deliquescence. Although homogeneous efflorescence has been studied in detail, heterogeneous efflorescence is not well understood. Here we examined heterogeneous efflorescence by optically levitating single droplets of salt solutions and exposed the droplet to a flow of mineral dust particles. The impact of mineral dust on efflorescence and the difference between immersion and contact efflorescence will be discussed.