A THEORETICAL EXPLANATION OF THE AGGREGATION OF HUMIC SUBSTANCES AS A FUNCTION OF PH AND ELECTROLYTE CONCENTRATION

被引：44

作者：

TOMBACZ, E

MELEG, E

机构：

[1] Attila József University, Department of Colloid Chemistry, H-6720 Szeged

来源：

ORGANIC GEOCHEMISTRY | 1990年 / 15卷 / 04期

关键词：

aggregation; coagulation; humate; humic acid; ionization model;

D O I：

10.1016/0146-6380(90)90164-U

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The surface ionization and aggregation properties of humic acid samples obtained from a brown coal were examined by means of potentiometric and conductometric acid-base titrations, molar mass determination and coagulation experiments with NaCl. The surface ionization model was applied to the humic acid-Na-humate system to explain the dependence of the surface electric properties and the aggregation state on pH and electrolyte concentration. The considerable dependences of molar masses and coagulation values on pH were interpreted on the basis of model calculations. © 1990.

引用

页码：375 / 381

页数：7

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