SOLVENT-EXTRACTION OF PRASEODYMIUM(III) AND GADOLINIUM(III) BY 1-PHENYL-3-METHYL-4-BENZOYL-5-PYRAZOLONE FROM WATER-ETHANOL SOLUTIONS

被引：0

作者：

CZAKISSULIKOWSKA, D

KUZNIK, B

MALINOWSKA, A

机构：

来源：

CHEMIA ANALITYCZNA | 1993年 / 38卷 / 04期

关键词：

1-PHENYL-3-METHYL-4-BENZOYL-5-PYRAZOLONE; PR(III); GD(III); EXTRACTION; WATER ETHANOL SOLUTIONS;

D O I：

暂无

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The extraction of lanthanides [Ln(III) = Pr, Gd] with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP or HL) in carbon tetrachloride from water-ethanol phase was investigated. A synergistic effect caused by the formation of adduct complexes LnL3.tEtOH was observed. Extraction parameters: pH0.5*, the conditional extraction equilibrium constants (K(ex,c)) and the conditional two-phase stability constants (beta3,c*) for the complexes LnL3 were evaluated. The values of the acid dissociation constant of HPMBP(pK(HL)) inwater-ethanol solutions and its distribution constant (p(HL)) between carbon tetrachloride and water-ethanol phases were determined.

引用

页码：455 / 462

页数：8

共 16 条

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