Luminescence decay time-based determination of potassium ions

被引：32

作者：

Krause, C ^{[1
]}

Werner, T ^{[1
]}

Huber, C ^{[1
]}

Klimant, I ^{[1
]}

Wolfbeis, OS ^{[1
]}

机构：

[1] Univ Regensburg, Inst Analyt Chem Chemo & Biosensors, D-93040 Regensburg, Germany

来源：

ANALYTICAL CHEMISTRY | 1998年 / 70卷 / 18期

关键词：

D O I：

10.1021/ac9802224

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A luminescence decay time-based potassium ion sensor is presented which applies the ion-exchange principle. The bulk membrane consists of valinomycin, plasticized PVC, and the ruthenium(II) tris-4,4'-diphenyl-2,2'-bipyridyl bromothymol blue ion pair [Ru(dibipy)(3)](BTB)(2) as a proton donor. The efficacy of radiationless energy transfer from the donor (the ruthenium complex) to the acceptor (BTB) is mediated by the potassium ion concentration. The concentration of potassium ions can be calculated from either luminescence intensity or decay time. At pH 8.7, the working function ranges from 1 to 100 mM KCl.

引用

页码：3983 / 3985

页数：3

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