In situ study of the specific adsorption of HSO4-/SO42- ions on hematite by radiotracer technique

被引：22
作者：
Horányi, G
Joó, P
机构：
[1] Hungarian Acad Sci, Chem Res Ctr, Inst Chem, H-1525 Budapest, Hungary
[2] Univ Debrecen, Dept Colloid Chem, H-4010 Debrecen, Hungary
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2000年 / 227卷 / 01期
基金：
匈牙利科学研究基金会;
关键词：
specific adsorption; sulfate; hematite; radiotracer technique;
D O I：
10.1006/jcis.2000.6852
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：
The specific adsorption of radiolabeled sulfate ions from perchlorate supporting electrolyte on hematite powder has been investigated. It was demonstrated that a measurable adsorption occurs only at pH values under 5, The adsorption capacity of a given amount of hematite powder tends to a limiting value with decreasing pH. A Langmuir-like adsorption isotherm describes the concentration dependence of the adsorption of sulfate species, It was found that the experimental results are in good agreement with the model suggested recently (Hug, S. J. J. Colloid Interface Sci. 188, 415 (1997)). (C) 2000 Academic Press.
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页码：206 / 211
页数：6
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