Cloud point extraction of lanthanide(III) ions via use of Triton X-100 without and with water-soluble calixarenes as added chelating agents

被引：58

作者：

Mustafina, A

Elistratova, J

Burilov, A

Knyazeva, I

Zairov, R

Amirov, R

Solovieva, S

Konovalov, A

机构：

[1] Russian Acad Sci, Kazan Sci Ctr, AE Arbuzov Inst Organ & Phys Chem, Kazan 420088, Russia

[2] Kazan VI Lenin State Univ, Kazan 420008, Russia

来源：

TALANTA | 2006年 / 68卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

lanthanide(III) complexes; calix[4]resorcinarene; thiacalix[4]arene; cloud point extraction; Triton X-100;

D O I：

10.1016/j.talanta.2005.06.011

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The use of water-soluble calixarenes: p-sulfonato thiacalixarene (ST), tetra-sulfonatomethylated calix[4]resorcinarene (SR), calix[4]resorcinarene phosphonic acid (PhR) as chelating agents in cloud point extraction (CPE) of La(III), Gd(III) and Yb(III) ions using Triton X-100 as non-ionic surfactant is introduced. The data obtained indicate that both complexation ability and structure of calixarenes govern the extraction efficiency of lanthanides. In particular ST and SR, forming 1: 1 lanthanide complexes with similar stability in aqueous media, exhibit different extractability when used as chelating agents in CPE. First synthesized PhR was found to be the most efficient chelating agent exhibiting pH-dependent selectivity within La(III), Gd(III) and Yb(III) in CPE. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：863 / 868

页数：6

共 29 条

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