ADSORPTION OF POLY(ETHYLENE GLYCOL)S ON MERCURY AQUEOUS-SOLUTION INTERFACE .1. KINETICS OF PEG-8000 ADSORPTION

被引：8
作者：
MOTA, AM [1 ]
GONCALVES, MLS [1 ]
FARINHA, JP [1 ]
BUFFLE, J [1 ]
机构：
[1] UNIV GENEVA,DEPT INORGAN ANALYT & APPL CHEM,CH-1211 GENEVA 4,SWITZERLAND
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1994年 / 90卷 / 2-3期
关键词：
AC VOLTAMMETRY; ADSORPTION; HG ELECTRODE; MACROMOLECULES; POLY(ETHYLENE GLYCOL);
D O I：
10.1016/0927-7757(94)02927-X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In order to study the influence of the adsorption of fulvic compounds on voltammetric signals and to understand better the adsorption of these compounds on hydrophobic natural water interfaces, adsorption studies of macromolecules such as poly(ethylene glycol) (HO(CH2(CH2O)n) with molecular weight of 8000 were done on the mercury/water interface by a.c. voltammetry at the potential of zero charge. The maximum surface concentration, adsorption equilibrium constant and adsorption rate constant have been determined from the global adsorption mechanism, controlled by two determining steps: diffusion and kinetics of adsorption at the interface.
引用
收藏
页码：271 / 278
页数：8
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