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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.
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页码：272 / 276
页数：5
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