Chodzińska Aleksandra, Zdziennicka Anna, Jańczuk Bronisław
Department of Interfacial Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
J Solution Chem. 2012 Dec;41(12):2226-2245. doi: 10.1007/s10953-012-9935-z. Epub 2012 Dec 4.
From measurements of the surface tension, density, viscosity and light scattering of aqueous solutions of methanol, ethanol and propanol at 293 K, their activity in the surface monolayer, surface excess concentration, and apparent and partial molar volume were determined. The surface excess concentration of alcohols at the water-air interface was determined from the Gibbs equation by using both the alcohol's activity and their molar fraction in the bulk phase and recalculated by using the Guggenheim-Adam equation. The values of the surface excess concentration determined from the Gibbs equation were also applied to determine the standard Gibbs energy of alcohol adsorption at the water-air interface from Langmuir's equation and compared to those determined from that of Aronson and Rosen. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s10953-012-9935-z) contains supplementary material, which is available to authorized users.
通过在293K下对甲醇、乙醇和丙醇水溶液的表面张力、密度、粘度和光散射进行测量，确定了它们在表面单分子层中的活度、表面过剩浓度以及表观摩尔体积和偏摩尔体积。利用吉布斯方程，通过使用醇在本体相中的活度及其摩尔分数，确定了水-空气界面处醇的表面过剩浓度，并使用古根海姆-亚当方程进行了重新计算。由吉布斯方程确定的表面过剩浓度值也被用于根据朗缪尔方程确定醇在水-空气界面处吸附的标准吉布斯自由能，并与从阿隆森和罗森方程确定的值进行比较。电子补充材料：本文的在线版本（doi:10.1007/s10953-012-9935-z）包含补充材料，授权用户可获取。
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