Simultaneous Determination of Amaranth and Nitrite in Foodstuffs via Electrochemical Sensor Based on Carbon Paste Electrode Modified with CuO/SWCNTs and Room Temperature Ionic Liquid

被引：0
作者：
Majede Bijad
Hassan Karimi-Maleh
Mohammad Farsi
Seyed-Ahmad Shahidi
机构：
[1] Islamic Azad University,Department of Agriculture, Sari Branch
[2] Quchan University of Advanced Technology,Department of Chemical Engineering, Laboratory of Nanotechnology
[3] Islamic Azad University,Department of Food Science and Technology, Ayatollah Amoli Branch
来源：
Food Analytical Methods | 2017年 / 10卷
关键词：
Amaranth; Nitrite; CuO/SWCNTs; 1-Methyl-3-butylimidazolium bromide;
D O I：
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中图分类号：
学科分类号：
摘要：
A carbon paste electrode modified with 1-methyl-3-butylimidazolium bromide and CuO decorated single-wall carbon nanotubes (1-M-3-BIBr/CuO/SWCNTs/CPE) was utilized for nanomolar determination of amaranth in the presence of nitrite using square wave voltammetric (SWV) method. The structure of CuO/SWCNTs was investigated by SEM method. 1-M-3-BIBr/CuO/SWCNTs/CPE exhibited an enhancement in electro-oxidation current and active surface area. Also, 1-M-3-BIBr/CuO/SWCNTs/CPE exhibited indicated high catalytic activity toward the electro-oxidation of amaranth and simultaneous determination of it in the presence of nitrite. The 1-M-3-BIBr/CuO/SWCNTs/CPE achieved dynamic ranges 0.004–750 μM and 1.0–10,000 μM between the oxidation currents and the concentration of amaranth and nitrite, respectively. We obtained the detection limit of 1.0 nM and 0.5 μM for amaranth and nitrite, respectively. The 1-M-3-BIBr/CuO/SWCNTs/CPE was successfully applied to analysis of amaranth and nitrite in foodstuffs.
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页码：3773 / 3780
页数：7
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