Electrocatalytic Oxidation and Determination of Insulin at Rhodamine B -Multi-Walled Carbon Nanotubes Modified Glassy Carbon Electrode

被引：1
|
作者：
Hatefi-Mehrjardi, A. [1 ,2 ,3 ]
Karimi, M. A. [1 ]
Kamalabadi-khorasani, S. [2 ,3 ]
机构：
[1] Payame Noor Univ, Dept Chem, POB 19395-4697, Tehran, Iran
[2] Payame Noor Univ, Dept Chem, Sirjan, Iran
[3] Payame Noor Univ, NNRL, Sirjan, Iran
来源：
5TH INTERNATIONAL BIENNIAL CONFERENCE ON ULTRAFINE GRAINED AND NANOSTRUCTURED MATERIALS, UFGNSM15 | 2015年 / 11卷
关键词：
Insulin; Multi-Walled Carbon Nanotubes; Rhodamine B; Glassy Carbon Electrode; Electrochemical determination;
D O I：
10.1016/j.mspro.2015.11.048
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The modified electrode surface was provided with the electropolymerization of the rhodamine B in the presence of carbon nanotube (CNT). The modified electrode offers dramatic improvements in the stability and sensitivity of voltammetric measurements of insulin compared to the bare and rhodamine B modified glassy carbon electrodes. The enhanced electrocatalytic activity towards insulin is indicated from lowering the potential of the oxidation process (starting around 0.75 vs. Ag/AgCl) and the substantially higher sensitivity over the entire potential range. A linear dynamic range (100-600 nM) was achieved with a detection limit of 5 nM. The accuracy of the modified electrode was indicated by insulin recovery test in the real samples as human plasma and pharmaceutical samples. (C) 2015 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：162 / 165
页数：4
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