【摘要】 采用ｐＨ电位滴定法研究了在２５℃、离子强度为０．１ｍｏｌ／ｌ（ＫＮＯ＿３）条件下，铀酰离子和６种２，３－二羟基－５－甲氧羰基苄基胺羧酰胺螯合剂和乙二胺四乙酸（ＥＤＴＡ）的三元配位反应，用ＳＣＯＧＳ２程序计算了所形成的配合物的累积生成常数，比较了混配配合物的稳定性，并通过模拟计算讨论了用双螯合剂联合促排铀酰的可能性。更多还原

【Abstract】 The ternary complexations of uranyl with six 2.3-dihydroxy-5-carbo-methoxybenzylaminocarboxylic acid amide chelating agents and ethylene diamine tetraacetic acid（EDTA） areinvestigated by potentiometric titration at 25℃ and an ionic strength of 0.1mol/l KNO₃. Compo-sitions and formation constants of the mixed ligand chelates are calculated using SCOGS2 pro-gram. The stabilities of mixed ligand chelates are compared. EDTA is likely to coordinate touranyl in EDDA forrn,Computer simulation shows that the decorporation in high uranyl concen-tration using mixtures of chelating agents may be possible.更多还原