ION-TRANSFER POLAROGRAPHIC STUDY ON THE LITHIUM ION SELECTIVITY AGAINST SODIUM-ION OF BIS(8-QUINOLYLOXY)PROPANE DERIVATIVES AND DIBENZYL-14-CROWN-4 AT AQUEOUS NITROBENZENE SOLUTION INTERFACE

被引：11

作者：

KUDO, Y ^{[1
]}

TAKEDA, Y ^{[1
]}

HIRATANI, K ^{[1
]}

MATSUDA, H ^{[1
]}

机构：

[1] IND PROD RES INST,TSUKUBA 305,JAPAN

来源：

ANALYTICAL SCIENCES | 1991年 / 7卷 / 04期

关键词：

LITHIUM ION SELECTIVITY; POTENTIOMETRIC SELECTIVITY COEFFICIENT; ION-TRANSFER POLAROGRAPHY; STABILITY CONSTANT; BIS(8-QUINOLYLOXY)PROPANE DERIVATIVE; DIBENZYL-14-CROWN-4;

D O I：

10.2116/analsci.7.549

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Lithium and sodium ion transfers from water (w) to nitrobenzene (NB) phase containing Li+-selective neutral carriers (L), three bis(8-quinolyloxy)propane derivatives and dibenzyl-14-crown-4 (DBzl4C4), were studied by ion-transfer polarograph at 25-degrees-C. The logarithmic values of potentiometric selectivity coefficients were obtained by the relation log k(LiNa)pot = F/2.3RT)(DELTA-phi(Li/LiL)-degrees'-DELTA-phi(Na/NaL)-degrees', where DELTA-phi(M/ML)-degrees' (M = Li and Na) denotes the formal potential of the process M+(w-phase) + L(NB-phase) reversible ML+(NB-phase). They were -2.1 for DBzl4C4 and -1.6--1.2 for bis(8-quinolyloxy)propane derivatives. The stability constants (mol-1 dm3) of the 1:1 complexes for Li+ and Na+ in the NB-phase were also obtained from the metal ion-concentration dependence of the half-wave potentials. The Li+ selectivity of each carrier L against Na+ was discussed in terms of the values of DELTA-phi(Li/LiL)-degrees' and DELTA-phi(Na/NaL)-degrees'.

引用

页码：549 / 553

页数：5

共 28 条

[1]

FUJINAGA T, 1982, BUNSEKI KAGAKU, V31, pE301

[2] SYNTHESIS AND PROPERTIES OF NONCYCLIC POLYETHER COMPOUNDS .12. A NONCYCLIC NEUTRAL CARRIER EXHIBITING EXCELLENTLY LI+-SELECTIVE TRANSPORT [J].