SELECTIVE SORPTION OF ALKALI-METAL CATIONS BY CARBOXYLIC-ACID RESINS CONTAINING ACYCLIC OR CYCLIC POLYETHER UNITS

被引：49

作者：

HAYASHITA, T ^{[1
]}

GOO, MJ ^{[1
]}

LEE, JC ^{[1
]}

KIM, JS ^{[1
]}

KRZYKAWSKI, J ^{[1
]}

BARTSCH, RA ^{[1
]}

机构：

[1] TEXAS TECH UNIV,DEPT CHEM & BIOCHEM,LUBBOCK,TX 79409

来源：

ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 21期

关键词：

D O I：

10.1021/ac00220a006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde In formic acid of three polyether carboxylic acids which possess two benzo group substituents. The selectivities and efficiencies of competitive alkali-metal cation sorption from aqueous solutions by these polyether carboxylic acid resins are strongly influenced by (1) the pH of the aqueous solution, (2) the acyclic or cyclic nature of the polyether unit, and (3) the conformational positioning of the carboxylic acid group In the resins derived from cyclic polyether (crown ether) compounds. Good sorption selectivity for Na+ was observed for dibenzo-16-crown-5 resin 3 in which the pendant carboxylic acid group is oriented over the polyether cavity. Resin 3 was utilized as a stationary phase for selective column concentration of Na+ from dilute aqueous solution. © 1990, American Chemical Society. All rights reserved.

引用

页码：2283 / 2287

页数：5

共 25 条

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