三元混配化合物的极谱研究──Phosphonic-、Amino-acid-Eu体系稳定性

Polarorgraphic studies of mixed-ligand complexes of metals with organism

以脉冲极谱法研究了用有机磷酸和氨基酸作为配体与Ｅｕ（Ⅲ）形成两元及三元体系配合物的极谱行为．模拟生理条件，在μ＝０．１（ＮａＣｌ）、Ｔ＝３１０±０．２Ｋ条件下，电极过程为准可逆；测定了配合物的稳定常数；讨论了复杂体系各配合物稳定性差异及其影响因素．

Binary or ternary complexes of Europium with phosphoric acids and amino acids were studied by pulse Polarographic method. The reduction was quasi-reversible and diffusion-controlled under imitatively physiological condition at μ=0.1 (NaCl), T=310±0.2K. The stability constants of all these systems were determined. The stability and the factors which affect the mixed complexes stability are discussed.