Gold Nanoparticle-Modified Indium Tin Oxide Electrode for Highly Sensitive Electrochemical Detection of Melamine

被引:14
|
作者
Akter, Humaiara [1 ]
Shaikh, A. A. [1 ]
Chowdhury, Taslima R. [1 ]
Rahman, M. S. [1 ]
Bakshi, P. K. [1 ]
Ahammad, A. J. Saleh [2 ]
机构
[1] Univ Dhaka, Dept Chem, Dhaka 1000, Bangladesh
[2] Univ Dhaka, Ctr Adv Res Sci, Dhaka 1000, Bangladesh
关键词
COLORIMETRIC PROBE; MILK; BIOSENSOR; FILM; ACID;
D O I
10.1149/2.001309eel
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A simple and highly sensitive electrochemical method, based on a gold nanoparticle (GNP)-modified indium tin oxide (ITO) electrode (ITO/GNP), was developed for the detection of melamine (MLM). The modified electrode surface was characterized by scanning electron microscope (SEM) and cyclic voltammetry (CV). MLM was detected based on the adsorption of MLM onto ITO/GNP electrode causing suppression in the cathodic peak current of ferricyanide. A wide linear concentration range from 5 to 500 nM with a lower detection limit of 1.0 nM (i.e. 0.13 ppb) for MLM was obtained. The proposed method was successfully applied to detect MLM in milk samples. (c) 2013 The Electrochemical Society.
引用
收藏
页码:B13 / B15
页数:3
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