Atmospheric gas-aerosol equilibrium I. Thermodynamic model

Yong Pyo Kim, John H. Seinfeld, Pradeep Saxena

Research output: Contribution to journalArticlepeer-review

284 Scopus citations


A rigorous and computationally efficient thermodynamic model that estimates the state and composition of atmospheric inorganic species between the gas and aerosol phases is presented. The estimation of important thermodynamic properties, equilibrium constants, ionic activity coefficients, water activity, and deliquescence points is described. Various sources and estimation methods for inorganic gas-liquid-solid equilibrium properties are compared and optimal approaches for the new equilibrium routine are incorporated.

Original languageEnglish
Pages (from-to)157-181
Number of pages25
JournalAerosol Science and Technology
Issue number2
StatePublished - 1 Jan 1993

Bibliographical note

Funding Information:
This work was supported by the Electric Power Research Institute under agreement RP3189-03.


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