OXIDATION OF GALENA .2. ELECTROKINETIC STUDY

被引：66

作者：

FORNASIERO, D ^{[1
]}

LI, FS ^{[1
]}

RALSTON, J ^{[1
]}

机构：

[1] UNIV S AUSTRALIA,SCH CHEM TECHNOL,THE LEVELS,SA 5095,AUSTRALIA

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1994年 / 164卷 / 02期

关键词：

D O I：

10.1006/jcis.1994.1176

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：

Zeta potential determinations have been used to study the oxidation of galena surfaces. The galena samples have been conditioned in aqueous solution at several pH values with various gases and for different amounts of time. A mechanism involving the dissolution of lead ions followed by their readsorption as lead hydroxide ions or colloidal particles has been proposed to account for the changes in zeta potential occurring during surface oxidation. The Gouy-Chapman-Stern double layer model has been used to calculate the zeta potential as a function of pH. The effect of sodium sulfide addition has also been investigated. To confirm this mechanism of oxidation, the adsorption of lead nitrate on quartz has been studied. (C) 1994 Academic Press, Inc.

引用

页码：345 / 354

页数：10

共 54 条

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