Highly sensitive and selective electrochemical determination of dopamine and ascorbic acid at Ag/Ag2S modified electrode

2011 ◽  
Vol 56 (5) ◽  
pp. 1955-1959 ◽  
Author(s):  
Chen-Yan Li ◽  
Ying-Jie Cai ◽  
Chien-Hsin Yang ◽  
Chen-Hao Wu ◽  
Yen Wei ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Highly Sensitive

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.

Highly sensitive electrochemical determination of 1-naphthol based on high-index facet SnO2 modified electrode

2012 ◽  
Vol 83 ◽  
pp. 478-484 ◽  
Author(s):  
Xiaofeng Huang ◽  
Guohua Zhao ◽  
Meichuan Liu ◽  
Fengting Li ◽  
Junlian Qiao ◽  
...  
Keyword(s):  
Modified Electrode ◽  
Electrochemical Determination ◽  
High Index ◽  
Highly Sensitive

Highly sensitive electrochemical determination of methotrexate based on a N-doped hollow nanocarbon sphere modified electrode

2021 ◽  
Vol 13 (1) ◽  
pp. 117-123
Author(s):  
Jiafeng Li ◽  
Dongdong Chen ◽  
Tao Zhang ◽  
Guolong Chen
Keyword(s):  
Electrochemical Sensor ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Highly Sensitive

A simple and highly sensitive electrochemical sensor for methotrexate was developed by preparing N-doped hollow nanocarbon spheres.

Electrochemical determination of dopamine and ascorbic acid at a novel gold nanoparticles distributed poly(4-aminothiophenol) modified electrode

Talanta ◽  
2007 ◽  
Vol 71 (4) ◽  
pp. 1774-1781 ◽  
Author(s):  
Anantha Iyengar Gopalan ◽  
Kwang-Pill Lee ◽  
Kalayil Manian Manesh ◽  
Padmanabhan Santhosh ◽  
Jun Heon Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrochemical Determination

Electrochemical determination of ascorbic acid in fruits on a vanadium oxide polypropylene carbonate modified electrode

2006 ◽  
Vol 113 (1) ◽  
pp. 150-155 ◽  
Author(s):  
Li Tian ◽  
Li Chen ◽  
Li Liu ◽  
Nan Lu ◽  
Wenbo Song ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Vanadium Oxide ◽  
Modified Electrode ◽  
Electrochemical Determination

Application of Black Phosphorus Nanosheets Modified Electrode for Electrochemical Determination of Ascorbic Acid

2019 ◽  
Vol 55 (12) ◽  
pp. 1221-1228
Author(s):  
Kai Jin Tian ◽  
Lei Hu ◽  
Yong Ping Dong ◽  
Xiang Feng Chu
Keyword(s):  
Ascorbic Acid ◽  
Modified Electrode ◽  
Electrochemical Determination ◽  
Black Phosphorus
Sign in / Sign up

Export Citation Format

Share Document