Improved AIOMFAC model parameterisation of the temperature    dependence of activity coefficients for aqueous organic mixtures

Ganbavale, G.; Zuend, A.; Marcolli, C.; Peter, T.

doi:10.5194/acp-15-447-2015

Articles | Volume 15, issue 1

https://doi.org/10.5194/acp-15-447-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-447-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 1

Research article

|

14 Jan 2015

Research article |

| 14 Jan 2015

Improved AIOMFAC model parameterisation of the temperature dependence of activity coefficients for aqueous organic mixtures

G. Ganbavale, A. Zuend, C. Marcolli, and T. Peter

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Jul 2014	45	25	8	78
Aug 2014	19	25	31	75
Sep 2014	18	19	34	71
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Latest update: 03 Apr 2026

Short summary

This study presents a new, improved parameterisation of the temperature dependence of activity coefficients implemented in the AIOMFAC group-contribution model. The AIOMFAC model with the improved parameterisation is applicable for a large variety of aqueous organic as well as water-free organic solutions of relevance for atmospheric aerosols. The new model parameters were determined based on published and new thermodynamic equilibrium data covering a temperature range from ~190 to 440 K.