URANYL ION-SELECTIVE OPTODE BASED ON NEUTRAL IONOPHORES

被引：22

作者：

LERCHI, M

REITTER, E

SIMON, W

机构：

[1] Department of Organic Chemistry, Swiss Federal Institute of Technology (ETH), Zürich, CH-8092

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1994年 / 348卷 / 04期

关键词：

D O I：

10.1007/BF00324032

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An optical sensor (optode) is described based on a plasticized poly(vinyl chloride) (PVC) bulk membrane incorporating an uranyl ion-selective ionophore, an H+-selective chromoionophore that changes its absorption spectrum upon protonation, and a lipophilic anionic site. The measuring range for uranyl was found to be 10(-7)10(-4) mol/l at pH 3.6. The selectivities over 11 alkali, alkaline earth and heavy metals were investigated. The sensor shows perfect short time repeatability and during 3 days of work no significant loss of chromoionophore or decay of anionic site was observed.

引用

页码：272 / 276

页数：5

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