Amperometric sensor for L-ascorbic acid determination based on MnO 2 bulk modified screen printed electrode

2000 ◽  
Vol 368 (5) ◽  
pp. 466-470 ◽  
Author(s):  
E. Turkusic ◽  
V. Milicevic ◽  
H. Tahmiscija ◽  
M. Vehabovic ◽  
S. Basic ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Amperometric Sensor ◽  
Screen Printed Electrode ◽  
Ascorbic Acid Determination ◽  
Acid Determination ◽  
Screen Printed

Screen Printed Carbon Nano-Powder for Ascorbic Acid Determination with Differential Pulse Voltammetry

2014 ◽  
Vol 979 ◽  
pp. 378-381
Author(s):  
W. Wonsawat ◽  
K. Somjit ◽  
N. Wangnaitum ◽  
O. Chailapakul
Keyword(s):  
Ascorbic Acid ◽  
Differential Pulse Voltammetry ◽  
Limit Of Detection ◽  
Differential Pulse ◽  
Working Electrode ◽  
Limit Of Quantitation ◽  
Pulse Voltammetry ◽  
Ascorbic Acid Determination ◽  
Acid Determination ◽  
Screen Printed

Carbon nanopowder mixed with carbon ink was used as a working screen-printed electrode. This electrode consists of carbon nanopowder working electrode, carbon counter electrode, and silver/silver chloride reference electrode. The electrochemical behavior of ascorbic acid has been studied by cyclic voltammetry and differential pulse voltammetry with screen-printed carbon nanopowder electrode. The propose electrode will enhanced the sensitivity for antioxidance determination because increasing of the surface area of the working electrode. The voltammetric sensor offers several advantages to both the green chemistry and eco-friendly. The method was successfully employed with 2 microliter of the working solution dropped on the electrode surface. A linear concentration, limit of quantitation and limit of detection was sufficient for the ascorbic acid determination in the vitamin C tablet. The results obtained for the sample juices demonstrated that the powerful of the method.

scholarly journals Paper-based platforms with coulometric readout for ascorbic acid determination in fruit juices

The Analyst ◽  
2020 ◽  
Vol 145 (9) ◽  
pp. 3431-3439
Author(s):  
Estefanía Nunez-Bajo ◽  
M. Teresa Fernández-Abedul
Keyword(s):  
Ascorbic Acid ◽  
Low Cost ◽  
Fruit Juices ◽  
Ascorbic Acid Determination ◽  
Cost Determination ◽  
Acid Determination

Paper-based electrochemical platforms with coulometric readout are employed for fast and low cost determination of ascorbic acid in commercial juice samples.

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