Effects of ionic strength and pH on the stability constants of the complex of Co(II) with soil fulvic acid

被引：6

作者：

Dong, WM

Li, WJ

Zhang, HQ

Wang, XD

You, ZJ

Zhou, CY

Du, JZ

Tao, ZY ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Radiochem Lab, Lanzhou 730000, Peoples R China

[2] China Inst Radiat Protect, Taiyuan 030006, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 1999年 / 241卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1007/BF02347474

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The stability constants for tracer concentrations of Co(II) complexes with the red earth fulvic acid were determined at pH 3.8-6.8 and ionic strength 0.001-1.0 mol/l by using the cation exchange equilibrium method and the radiotracer Co-60. Th, effects of ionic strength and pH on the stability constants of 1:1 Co(II) complexes were investigated, and it was found that the stability constants of complexes of humic substances do not vary with ionic strength and pH in a manner similar to that of simple complexes.

引用

页码：351 / 353

页数：3

共 9 条

[1]

MACCARTHY P, 1991, INTERACTIONS SOIL CO, pCH13

[2] ORGANO-METALLIC INTERACTIONS IN SOILS .8. AN EVALUATION OF METHODS FOR DETERMINATION OF STABILITY CONSTANTS OF METAL-FULVIC ACID COMPLEXES [J].