Adsorption behaviour of neutral organic substances at the free surface of polar organic solvents

被引：1
|
作者：
Dabkowski, J
Pruszkowska-Drachal, R
Dabkowska, M
Koczorowski, Z
Trasatti, S
机构：
[1] Univ Milan, Dept Phys Chem & Electrochem, I-20133 Milan, Italy
[2] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2003年 / 552卷
关键词：
air/solution interface; surface potential; organic substance adsorption; non-aqueous solvent;
D O I：
10.1016/S0022-0728(03)00281-X
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Changes in the surface tension and in the surface potential of dimethylsulfoxide and ethylene glycol upon adsorption of chloroform, trichloroethanol and tetrahydrofuran (THF) have been measured. Surface excesses have been determined by fitting the surface pressure curves with a Frumkin equation. The derived adsorption parameters have been scrutinised and discussed. Adsorption potential shifts have been extrapolated to surface saturation conditions and analyzed in terms of surface orientation of the adsorbate. THF has been found to adsorb with opposite orientations at the surface of the two solvents. An explanation is offered. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：77 / 83
页数：7
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