络合滴定－阳极溶出伏安法测定腐植酸与金属络合物的稳定常数

Estimate of Conditional Stability Constants Of Complexes Of Heavy Metal And Humic Acids by Method Of Titration ASV

以金属离子络合滴定－阳极溶出伏安法（ＡＳＶ法）测定得出湘江底泥、灵石风化煤和德都泥炭３种腐植酸分别与Ｐｂ、Ｃｄ的络合稳定常数、络合容量和分子量３个参数．并探讨了可能的误差来源及消除方法。

In this paper,the conditional stability constants of complexes of heavy metal(Cd andPb)and humic acids from Xiang Jiang river sediment,Linshi weathered coal and Dedu peatshave been estimated.At the same time,complexing capacity and molecular weight have been estimated too. We have also investigated the effects,sources of errors and the methods for eliminating them.