A novel non-enzymatic sensor for urea using a polypyrrole-coated platinum electrode

被引：73
|
作者：
Mondal, Subrata [1 ]
Sangaranarayanan, M. V. [1 ]
机构：
[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 177卷
关键词：
Urea; Polypyrrole; Amperometry; Electrochemical impedance spectroscopy; Cyclic voltammetry; GLUCOSE-OXIDASE; BIOSENSOR; POLYANILINE; BLOOD; SERUM;
D O I：
10.1016/j.snb.2012.11.031
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The potentiodynamic polymerization of pyrrole is carried out on Pt electrodes using sodium dodecyl sulphate and the coated electrode is employed for sensing of urea non-enzymatically. Employing amperometric and impedimetric methods, urea is estimated in mildly acidic conditions. A detection limit of 40 mu M is obtained along with a linearity of 80-1440 mu M and a sensitivity of 1.11 mu A mu M-1 cm(-2) from the amperometric data. The Nyquist plot is employed for the construction of the calibration curve from the impedance analysis. The interference of different compounds such as ascorbic acid, uric acid, sodium chloride and calcium chloride is also analyzed. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：478 / 486
页数：9
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