Abstract
This chapter focuses on the three groups of particles dried from KCl/NaCl, KC1/KI, and (NH4)2SO4/NH4NO3 mixed solutions at different mole ratios. Thermodynamic analysis has shown that phase partitioning of multicomponent aerosol particles occurs during crystallization. Particles dried from multicomponent aqueous aerosols do not have a homogeneous chemical morphology except at the eutonic point. Rapid single-particle mass spectrometry (RSMS) has been used to explore the chemical composition of particles dried from KCl/NaCl, KC1/KI, and (NH4)2SO4/NH4NO3 mixed solutions at different mole ratios. The results suggest that the surface layer is enriched with the minor component and are consistent with the thermodynamic predictions.
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