Electrochemical response of ascorbic acid at conducting and electrogenerated polymer modified electrodes for electroanalytical applications: a review

Talanta ◽  
2004 ◽  
Vol 64 (1) ◽  
pp. 121-129 ◽  
Author(s):  
A MALINAUSKAS
Keyword(s):  
Ascorbic Acid ◽  
Modified Electrodes ◽  
Electrochemical Response ◽  
Polymer Modified Electrodes

Resolution of dopamine and ascorbic acid using nickel(II) complex polymer-modified electrodes

2007 ◽  
Vol 602 (2) ◽  
pp. 217-225 ◽  
Author(s):  
Seon-Young Yi ◽  
Hye-Young Chang ◽  
Hyung-hwa Cho ◽  
Yu Chul Park ◽  
Sang Hak Lee ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Modified Electrodes ◽  
Polymer Modified Electrodes ◽  
Complex Polymer

Controlled release of biological molecules from conducting polymer modified electrodes

1994 ◽  
Vol 368 (1-2) ◽  
pp. 329-332 ◽  
Author(s):  
Myoungho Pyo ◽  
Gabrielle Maeder ◽  
Robert T. Kennedy ◽  
John R. Reynolds
Keyword(s):  
Controlled Release ◽  
Conducting Polymer ◽  
Modified Electrodes ◽  
Biological Molecules ◽  
Polymer Modified Electrodes

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.

scholarly journals Quaternary phosphonium-based (TPQPCl)-ionomer/graphite nanoplatelets composite chemically modified electrodes: a novel platform for sensing applications

2018 ◽  
Vol 6 (48) ◽  
pp. 13293-13304 ◽  
Author(s):  
Sandra Hernandez-Aldave ◽  
Robert B. Kaspar ◽  
Michael P. Letterio ◽  
Afshin Tarat ◽  
Yushan Yan ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Amperometric Detection ◽  
Modified Electrodes ◽  
Chemically Modified Electrodes ◽  
Graphite Nanoplatelets ◽  
Chemically Modified ◽  
Sensing Applications ◽  
Sensing Platform ◽  
Coated Electrodes

Ionomer (TPQPCl)/graphite nanoplatelet-coated electrodes are developed as a new sensing platform for amperometric detection of ascorbic acid.

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