SYNERGIC EXTRACTION OF TERVALENT LANTHANOIDS WITH 2-THENOYLTRIFLUOROACETONE AND ETHYLENEDIAMINE AS A NEUTRAL BIDENTATE LIGAND

被引：11

作者：

NAKAMURA, S ^{[1
]}

SUZUKI, N ^{[1
]}

机构：

[1] TOHOKU UNIV,FAC SCI,DEPT CHEM,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 270卷 / 01期

关键词：

EXTRACTION; LANTHANOIDS;

D O I：

10.1016/0003-2670(92)80095-O

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The synergic extraction of tervalent lanthanoids [Ln(III)], La, Nd, Th and Yb, with 2-thenoyltrifluoroacetone (Htta) and ethylenediamine (en) in benzene was investigated. The partition coefficient of en between benzene and aqueous phase was determined as 10(-3.46). The synergic enhancement was observed at pH > 7.2, and was attributed to the formation of the adduct Ln(tta)3en. The adduct formation constant, beta(s,1) increases with increase of atomic number of Ln(III).

引用

页码：95 / 99

页数：5

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