On the kinetics of adsorption and desorption of perchlorate ions in the presence of 3-methyl-isoquinoline at the mercury—aqueous solution interface

✍ Scribed by J. Lipkowski; G. Quarin; Cl. Buess-Herman

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 611 KB
• Volume: 26
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(81)85022-0

✦ Synopsis

Ahtract-Coadsorption of perchlorate ions and 3-methyl-isoquinoline molecules at the mercury-aqueous solution interface results in the formation of a condensed film. The process of ClO; incorporation (or removal) is very slow. Characteristic relaxation times (about 10-l s) are several orders of magnitude larger than values typical of ion adsorption at a mercurysolution interface which is free from organic surfactant.

The relationships between the rate of the process, the electrode potential and the amount of adsorbed CIO; ions are determined and discussed. The results indicate that the rate of the overall process is controlled by a slow adsorption (or dasorption) step whose kinetics are consonant with an isotherm of the Temkin type.