A model for the assessment of interfering processes in Faradic electrodes

被引：14

作者：

Soto, Juan ^{[1
]}

Labrador, Roberto H. ^{[1
]}

Marcos, M. D. ^{[1
]}

Martinez-Manez, Ramon ^{[1
]}

Coll, Carmen ^{[1
]}

Garcia-Breijo, Eduardo ^{[2
]}

Gil, Luis ^{[2
]}

机构：

[1] Univ Politecn Valencia, Inst Quim Mol Aplicada, Dept Quim, Valencia, Spain

[2] Univ Politecn Valencia, Dept Ingn Elect, Valencia, Spain

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2008年 / 142卷 / 01期

关键词：

Faradic electrode; electrode potential; thick-film pH sensor;

D O I：

10.1016/j.sna.2007.04.010

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A model based on the changes of the solid activity due to the transformation of one solid into another is introduced. The model allows to state broad-spectrum equations which describe the behaviour of the potential of second- and third-order Faradic electrodes. Experimental verification of the model was carried out using common metal-based electrodes and also a quite complex thick-film pH sensor. The model was used to predict the redox behaviour in the following cases: (i) study of the potential variation of a Ag/AgBr electrode in the presence of certain amounts of chloride and, (ii) a RuO2-based thick-film pH sensor in front of common anions. There was found a remarkably good agreement between the experimental and theoretical values. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：56 / 60

页数：5

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