Solubility of fine particles of strontium sulfate

被引：132

作者：

Enustun, B. V. ^{[1
]}

Turkevich, John ^{[1
]}

机构：

[1] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1960年 / 82卷 / 17期

关键词：

D O I：

10.1021/ja01502a015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Ostwald-Freundlich equation for the solubility of fine particles was extended to crystals of any geometry with any number of different interfacial tensions. Measuring the particle sizes by electron microscopy, the solubility of SrSO4 particles in the colloidal range was investigated by a tracer method at 25.0 degrees. Results are in good agreement with the theory. The smallest particles in a given population appear to control the solubility. The solid SrSO4/solution mean interfacial tension was calculated as 84 +/- 8 erg. cm. (-2) at 25.0 degrees against a much higher value given in the literature, which is considered to be in error. From precipitation experiments the size of SrSO4 nuclei is estimated to be ca. 18 angstrom.

引用

页码：4502 / 4509

页数：8

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