A polypyrrole-based solid-contact Pb2+-selective PVC-membrane electrode with a nanomolar detection limit

被引：115

作者：

Sutter, J ^{[1
]}

Lindner, E

Gyurcsányi, RE

Pretsch, E

机构：

[1] ETH Honggerberg, Organ Chem Lab, CH-8093 Zurich, Switzerland

[2] Univ Memphis, Dept Biomed Engn, Memphis, TN 38152 USA

[3] Budapest Univ Technol & Econ, Inst Gen & Analyt Chem, H-1111 Budapest, Hungary

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2004年 / 380卷 / 01期

关键词：

ion-selective electrode; solid contact; polypyrrole; lower detection limit;

D O I：

10.1007/s00216-004-2737-4

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Ion-selective electrodes (ISE) based on conventional plasticized PVC membranes with solid inner contact (SC) have so far had unsatisfactory lower detection limits. Here it is shown that electropolymerization of pyrrole in the presence of potassium hexacyanoferrate(II)(III) on Pt results in adequate inner contact for SC-ISE. The nanomolar lower detection limit achieved with the Pb2+-selective PVC membranes investigated is comparable with values obtained with optimized internal solutions of liquid-contact ISE.

引用

页码：7 / 14

页数：8

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