VOLTAMMETRIC LITHIUM ION-SELECTIVE ELECTRODES BASED ON ION TRANSFER AT THE OIL/WATER INTERFACE FACILITATED BY NEUTRAL IONOPHORES

被引：14

作者：

SAWADA, S

OSAKAI, T

SENDA, M

机构：

[1] KOBE UNIV,FAC SCI,DEPT CHEM,KOBE 657,JAPAN

[2] FUKUI PREFECTURAL UNIV,DEPT BIOSCI,MATSUOKA,FUKUI 91011,JAPAN

来源：

ANALYTICAL SCIENCES | 1995年 / 11卷 / 05期

关键词：

LITHIUM ION; BLOOD SERUM; ION-SELECTIVE ELECTRODE; VOLTAMMETRY; OIL/WATER INTERFACE; NEUTRAL IONOPHORE;

D O I：

10.2116/analsci.11.733

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Voltammetric measurements were performed for the transfers of Li+ and Na+ at an oil/water interface facilitated by neutral ionophores including 14-crown-4 derivatives. For the organic solvent, nitrobenzene, o-nitrophenyloctylether (NPOE) and o-nitrophenylphenylether (NPPE) were examined. The interface between water and NPPE containing 20 mM dibenzyl-14-crown-4 was found to serve best for the ion-selective-electrode (ISE) surface for the voltammetric determination of Li+. A test of this voltammetric Li+-ISE using artificial serum showed that the interference from a large amount (ca. 140 mM) of Na+ in blood can be easily avoided by detecting the Na+ concentration simultaneously with the same electrode.

引用

页码：733 / 738

页数：6

共 19 条

[1]

AMDISEN AD, 1986, HDB LITHIUM THERAPY

[2]

BOCHENSKA M, 1990, MIKROCHIM ACTA, V3, P277

[3] ELECTROCHEMICAL PROPERTIES OF THE INTERFACE BETWEEN 2 IMMISCIBLE ELECTROLYTE-SOLUTIONS .1. EQUILIBRIUM SITUATION AND GALVANI POTENTIAL DIFFERENCE [J].