A new dodecylsulfate ion-selective sensor based on electrochemically prepared polypyrrole and PVC

被引：0
|
作者：
Alizadeh, N [1 ]
Mahmodian, M [1 ]
机构：
[1] Tarbiat Modarres Univ, Dept Chem, Tehran, Iran
来源：
ELECTROANALYSIS | 2000年 / 12卷 / 07期
关键词：
dodecylsulfate; sensor; ion-selective electrode; polypyrrole; electrochemical polymerization;
D O I：
10.1002/(SICI)1521-4109(200005)12:7<509::AID-ELAN509>3.0.CO;2-U
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Dodecylsulfate-doped polypyrrole (PPy-DS) was prepared electrochemically by anodic polymerization of pyrrole in the presence of dodecylsulfate (DS-) ions in aqueous solution and used as a DS- sensor. The effect of polymerization conditions on the characteristics of the potential response of the sensor was also investigated. The electrode made with PVC-PPy-DS membrane, plasticized with 2-nitro-phenyloctylether (o-NPOE) showed the Nernstian behavior (57.5 mV per decade over 10(-5) to 7 x 10(-3) M DS-) with a detection limit of 5 x 10(-6) M. The response time of the electrode is in the order of a few seconds and can be used for at least six months without any divergence. The electrode is highly selective to DS- ion over diverse inorganic anions.
引用
收藏
页码：509 / 512
页数：4
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