Electrochemical Determination of Ascorbic Acid at ?-MnO2 Modified Carbon Black Microelectrodes

2004 ◽  
Vol 147 (4) ◽  
Author(s):  
Jun Zhang ◽  
Pei-Hong Deng ◽  
Yong-Lan Feng ◽  
Yun-Fei Kuang ◽  
Jin-Jun Yang
Keyword(s):  
Ascorbic Acid ◽  
Carbon Black ◽  
Electrochemical Determination

scholarly journals Electrochemical determination of ascorbic acid at p-phenylenediamine film-holes modified glassy carbon electrode

2015 ◽  
Vol 80 (9) ◽  
pp. 1161-1175 ◽  
Author(s):  
Bikila Olana ◽  
Shimeles Kitte ◽  
Tesfaye Soreta
Keyword(s):  
Ascorbic Acid ◽  
Detection Limit ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Linear Response ◽  
Modified Electrodes ◽  
Electrochemical Determination ◽  
Carbon Electrode

In this work the determination of ascorbic acid (AA) at glassy carbon electrode (GCE) modified with a perforated film produced by reduction of diazonium generated in situ from p-phenylenediamine (PD) is reported. Holes were intentionally created in the modifier film by stripping a pre-deposited gold nanoparticles. The modified electrodes were electrochemically characterized by common redox probes: hydroquinone, ferrocyanide and hexamineruthenium(III). The cyclic voltammetric and amperometric response of AA using the modified electrodes was compared with that of bare GCE. The bare GCE showed a linear response to AA in the concentration range of 5 mM to 45 mM with detection limit of 1.656 mM and the modified GCE showed a linear response to AA in the concentration range of 5 ?M to 45 ?M with detection limit of 0.123 ?M. The effect of potential intereferents on amperometric signal of AA at the modified GCE was examined and found to be minimal. The inter-electrode reproducibility, stability, and accuracy were determined. The modified electrode showed excellent inter-electrode reproducibility, accuracy and stability. The modified electrode reported is a promising candidate for use in electroanalysis of AA.

Defects regulating of graphene ink for electrochemical determination of ascorbic acid, dopamine and uric acid

Talanta ◽  
2018 ◽  
Vol 180 ◽  
pp. 248-253 ◽  
Author(s):  
Li Fu ◽  
Aiwu Wang ◽  
Guosong Lai ◽  
Weitao Su ◽  
François Malherbe ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Electrochemical Determination

Transfer of multivariate calibration model for simultaneous electrochemical determination of ascorbic acid and uric acid

2021 ◽  
Vol 133 (4) ◽  
Author(s):  
Yasaman Sefid-Sefidehkhan ◽  
Haneie Salehniya ◽  
Maryam Khoshkam ◽  
Mandana Amiri
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Multivariate Calibration ◽  
Electrochemical Determination ◽  
Calibration Model

Simultaneous determination of dopamine, ascorbic acid and uric acid using a multi-walled carbon nanotube and reduced graphene oxide hybrid functionalized by PAMAM and Au nanoparticles

2015 ◽  
Vol 7 (4) ◽  
pp. 1471-1477 ◽  
Author(s):  
Siyuan Wang ◽  
Wen Zhang ◽  
Xia Zhong ◽  
Yaqin Chai ◽  
Ruo Yuan
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Simultaneous Determination ◽  
Au Nanoparticles ◽  
Electrochemical Determination ◽  
Multi Walled Carbon Nanotube ◽  
Reduced Graphene

A nanohybrid (RGO–PAMAM–MWCNT–AuNPs) for simultaneous electrochemical determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA) was reported in this paper.

Simultaneous Electrochemical Determination of Adrenaline and Ascorbic Acid: Influence of [CTAB]

2009 ◽  
Vol 156 (12) ◽  
pp. J375 ◽  
Author(s):  
S. Corona-Avendaño ◽  
G. Alarcón-Ángeles ◽  
M. T. Ramírez-Silva ◽  
M. Romero-Romo ◽  
A. Cuán ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Electrochemical Determination
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