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Glass transition and phase state of organic compounds: dependency on molecular properties and implications for secondary organic aerosols in the atmosphere.
Estimates for the glass forming properties of atmospheric secondary organic aerosol (SOA) are presented and how the viscosity in liquid, semi-solid and glassy states affect the diffusivity of those molecules constituting the organic matrix are shown. Expand
Gas uptake and chemical aging of semisolid organic aerosol particles
The findings demonstrate that the occurrence and properties of amorphous semisolid phases challenge traditional views and require advanced formalisms for the description of organic particle formation and transformation in atmospheric models of aerosol effects on air quality, public health, and climate. Expand
Multiphase chemistry at the atmosphere-biosphere interface influencing climate and public health in the anthropocene.
This work addresses air contaminants and their multiphase chemical interactions at the atmosphere−biosphere interface, including human lungs and skin, plant leaves, cryptogamic covers, soil, and aquatic surfaces, and the chemical interactions of reactive oxygen species and reactive nitrogen species, as well as carbonaceous combustion aerosols. Expand
Global distribution of particle phase state in atmospheric secondary organic aerosols
This work developed a method to estimate glass transition temperatures based on the molar mass and molecular O:C ratio of SOA components, and used the global chemistry climate model EMAC with the organic aerosol module ORACLE to predict the phase state of atmospheric SOA. Expand
Molecular corridors and parameterizations of volatility in the chemical evolution of organic aerosols
Abstract. The formation and aging of organic aerosols (OA) proceed through multiple steps of chemical reaction and mass transport in the gas and particle phases, which is challenging for theExpand
Radiative impact of mixing state of black carbon aerosol in Asian outflow
[1] The radiative impact of the mixing state of black carbon (BC) aerosol is investigated in Asian outflow. The mixing state and size distribution of BC aerosol were measured with a ground-basedExpand
Kinetic multi-layer model of gas-particle interactions in aerosols and clouds (KM-GAP): linking condensation, evaporation and chemical reactions of organics, oxidants and water
Abstract. We present a novel kinetic multi-layer model for gas-particle interactions in aerosols and clouds (KM-GAP) that treats explicitly all steps of mass transport and chemical reaction ofExpand
Predicting the glass transition temperature and viscosity of secondary organic material using molecular composition
Abstract. Secondary organic aerosol (SOA) accounts for a large fraction of submicron particles in the atmosphere. SOA can occur in amorphous solid or semi-solid phase states depending on chemicalExpand
Molecular corridors and kinetic regimes in the multiphase chemical evolution of secondary organic aerosol
Abstract. The dominant component of atmospheric, organic aerosol is that derived from the oxidation of volatile organic compounds (VOCs), so-called secondary organic aerosol (SOA). SOA consists of aExpand
Evolution of mixing state of black carbon in polluted air from Tokyo
[1] The evolution of the mixing state of black carbon aerosol (BC) was investigated using a single-particle soot photometer (SP2) in polluted air transported from Tokyo. Ground-based measurements ofExpand