1-(2-PYRIDYLAZO)-2-NAPHTHOL (PAN) AS EXTRACTANT IN SOLID LIQUID EXTRACTION OF SOME TRIVALENT RARE-EARTH ELEMENTS

被引：33

作者：

GAO, JZ

HU, GL

KANG, JW

BAI, GB

机构：

[1] Institute of chemistry, Northwest Normal University, Lanzhou

来源：

TALANTA | 1993年 / 40卷 / 02期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0039-9140(93)80321-H

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the present paper, solid-liquid extraction behaviour of RE(III) (RE = La, Ce, Pr, Nd, Sm, Gd, Dy and Yb) by the use of 1-(2-pyridylazo)-2-naphthol (PAN, HL) as an extractant in paraffin (m.p. 48 - 50-degrees) has been investigated at 80 +/- 0.07-degrees. The effect of equilibrium time, pH of aqueous phase, concentration of extractant in paraffin and solid diluent as well as buffer solution used on the extraction efficiency of RE(III) have been discussed. The extraction reacton is RE3+ + 2HL(o) + Cl- half arrow right over half arrow left REL2Cl(o) + 2H+.

引用

页码：195 / 200

页数：6

共 15 条

[1] HETEROCYCLIC AZO DYESTUFFS IN ANALYTICAL CHEMISTRY - A REVIEW [J].