论文部分内容阅读
对铈（Ⅳ）与３，４－二羟基苯甲酸的配位反应进行了研究．金属离子与配体在ｐＨ＜４．０时，难以生成配合物；ｐＨ＞４．０时，可以生成Ｍ：Ｌ＝１：１～４的４种组成的配合物．用ＭｃＣｏｎｎｅｌｌ法，平衡移动法，Ｊｏｂ法和极谱法对铈（Ⅳ）与３，４－二羟基苯甲酸配合物的组成与稳定常数进行了测定，各法所测结果相近．
The coordination reaction of cerium (Ⅳ) with 3,4-dihydroxybenzoic acid was studied. Metal ions and ligands are difficult to form complexes at pH <4.0; when pH> 4.0, four complexes with M: L = 1: 1-4 can be formed. The composition and stability constants of cerium (Ⅳ) and 3,4-dihydroxybenzoic acid complexes were determined by McConnell method, equilibrium shift method, Job method and polarographic method. The results obtained by each method were similar.