Highly selective iodide poly(vinyl chloride) membrane electrode based on a nickel(II) tetraazaannulene macrocyclic complex

被引：69

作者：

Ying, M ^{[1
]}

Yuan, R ^{[1
]}

Zhang, XM ^{[1
]}

Song, YQ ^{[1
]}

Li, ZQ ^{[1
]}

Shen, GL ^{[1
]}

Yu, RQ ^{[1
]}

机构：

[1] HUNAN UNIV,CHEM & CHEM ENGN COLL,INST CHEMOMETR & CHEM SENSING TECHNOL,CHANGSHA 410082,PEOPLES R CHINA

来源：

ANALYST | 1997年 / 122卷 / 10期

关键词：

iodide-selective electrode; nickel tetraazaannulene; macrocyclic complex; poly(vinyl chloride) membrane;

D O I：

10.1039/a700544j

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A PVC membrane electrode based on a nickel(II) tetraazaannulene macrocyclic complex as the carrier is described. The electrode exhibits an anti-Hofmeister selectivity sequence with a preference for iodide at pH 3.0-4.0. It has a linear response to iodide from 8.0 x 10(-6) to 1 x 10(-1) mol dm(-3) with a slope of -54.7 +/- 0.2 mV per decade (20 degrees C), a satisfactory reproducibility and a rapid response time. The pH dependence of the potential response is discussed. The response mechanism of the electrode was investigated by ac impedance, quartz crystal microbalance and spectroscopic techniques. The electrode can be used for the determination of iodide in drug preparations.

引用

页码：1143 / 1146

页数：4

共 29 条

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