Poly-xanthurenic acid modified electrodes: An amperometric sensor for the simultaneous determination of ascorbic and uric acids

2012 ◽  
Vol 168 ◽  
pp. 289-296 ◽  
Author(s):  
Francisco de Assis dos Santos Silva ◽  
Cleylton Bezerra Lopes ◽  
Lauro Tatsuo Kubota ◽  
Phabyanno Rodrigues Lima ◽  
Marília Oliveira Fonseca Goulart
Keyword(s):  
Simultaneous Determination ◽  
Modified Electrodes ◽  
Amperometric Sensor ◽  
Xanthurenic Acid

Amperometric sensor for simultaneous determination of Cd2+and Pb2+

2001 ◽  
Author(s):  
Shengshui Hu ◽  
Kangbing Wu ◽  
Hongchao Yi ◽  
Dafu Cui
Keyword(s):  
Simultaneous Determination ◽  
Amperometric Sensor

scholarly journals Novel Electrochemical Sensor Fabricated for Individual and Simultaneous Ultrasensitive Determination of Olaquindox and Carbadox Based on MWCNT-OH/CMK-8 Hybrid Nanocomposite Film

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3041 ◽  
Author(s):  
Yanqing Liu ◽  
Gengxin Hu ◽  
Hongwu Wang ◽  
Su Yao ◽  
Yinjian Ye
Keyword(s):  
Electrochemical Sensor ◽  
Simultaneous Determination ◽  
Modified Electrode ◽  
Electrochemical Impedance ◽  
Modified Electrodes ◽  
Differential Pulse ◽  
Hybrid Nanocomposite ◽  
Experimental Conditions ◽  
Linear Relationships

A hybrid nanocomposite consisting of hydroxylated multi-walled carbon nanotubes (MWCNTs−OH) and cube mesoporous carbon (CMK−8) was applied in this study to construct an MWCNT−OH/CMK−8/gold electrode (GE) electrochemical sensor and simultaneously perform the electro-reduction of olaquindox (OLA) and carbadox (CBX). The respective peak currents of CBX and OLA on the modified electrode increased by 720- and 595-fold relative to the peak current of GE. The performances of the modified electrode were investigated with electrochemical impedance spectroscopy, cyclic voltammetry, and differential pulse voltammetry. Then, the modified electrodes were used for the individual and simultaneous determination of OLA and CBX. The fabricated sensor demonstrated a linear response at 0.2–500 nmol/L in optimum experimental conditions, and the detection limits were 104.1 and 62.9 pmol/L for the simultaneous determination of OLA and CBX, respectively. As for individual determination, wide linear relationships were obtained for the detected OLA with levels of 0.05–500 nmol/L with LOD of 20.7 pmol/L and the detected CBX with levels of 0.10–500 nmol/L with LOD of 50.2 pmol/L. The fabricated sensor was successfully used in the independent and simultaneous determination of OLA and CBX in spiked pork samples.

Carbon nanotube-modified electrodes for the simultaneous determination of dopamine and ascorbic acid

The Analyst ◽  
2002 ◽  
Vol 127 (5) ◽  
pp. 653-658 ◽  
Author(s):  
Zonghua Wang ◽  
Jun Liu ◽  
Qionglin Liang ◽  
Yiming Wang ◽  
Guoan Luo
Keyword(s):  
Ascorbic Acid ◽  
Carbon Nanotube ◽  
Simultaneous Determination ◽  
Modified Electrodes

Simultaneous determination of dopamine and ascorbic acid at poly(neutral red) modified electrodes

1998 ◽  
Vol 363 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Yuanxi Sun ◽  
Baoxian Ye ◽  
Wuming Zhang ◽  
Xingyao Zhou
Keyword(s):  
Ascorbic Acid ◽  
Simultaneous Determination ◽  
Modified Electrodes ◽  
Neutral Red
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