稀土元素-氨三乙酸-氨基酸混配型配合物的研究  

STUDY ON MIXED LIGAND COMPLEXES OF RARE EARTH WITH NITRILOTRIACETIC ACID AND AMINO ACID

作　　者：高峰[1] 牛春吉[1] 倪嘉缵[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《应用化学》1990年第3期10-13,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：为探索多元体系中稀土离子与氨基酸的配位作用,本文在25℃和0.15mol/dm^3(NPCl)离子强度条件下,用pH电位法测定了稀土—氨三乙酸分别与蛋氨酸、丝氨酸生成混配型配合物的稳定常数。讨论了上述混配型配合物稳定常数随稀土原子序数的变化规律以及钇的位置。The stability constants for mixed ligand complexes of rare earth with nitrilotriacetic acidas primary ligand and amino acid as secondary ligand have been determined by potentiometrictitration at 25℃ and an ionic strength of 0.15mol/dm^3(NaCl). A discussion on the relation-.ship between the stability constants for the mixed ligand complexes and the atomic numberof rare earth has been made. It was found that the position of Y in the ternary systemshifted to the vicinity of neodymium.

关 键 词：稀土配合物 氨三乙酸 氨基酸 

分 类 号：O614.33[理学—无机化学]