Abstract
A thermodynamic model is presented for the aqueous–air interface. For
common organic solutes a relationship between the activity coefficients
in the bulk solution and on the surface layer is deduced by using the
concept of a surface monolayer. This relation has enabled development of
an equation expressing the air–water surface adsorption coefficient as a
function of bulk activity coefficients, surface tensions, molar volumes
and vapour pressures of the adsorbing species. The data for 51
compounds, including alkanes, cycloalkanes, aromatics, halogenated
hydrocarbons, alcohols, ethers and esters, and ketones were used in the
study.
Original language | English |
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Pages (from-to) | 39-45 |
Journal | Journal of Colloid and Interface Science |
Volume | 337 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2009 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Adsorption
- Air-water interface
- Monolayer model
- Surface tension
- Thermodynamic modeling