Direct analysis of ascorbic acid in food beverage samples by flow injection analysis using reduced graphene oxide sensor

2020 ◽  
Vol 319 ◽  
pp. 126509 ◽  
Author(s):  
Lucas Vinícius de Faria ◽  
Thalles Pedrosa Lisboa ◽  
Davi Marques de Farias ◽  
Fausto Moreira Araujo ◽  
Mateus Moura Machado ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Direct Analysis ◽  
Beverage Samples ◽  
Reduced Graphene

Flow Injection Analysis Nitrite Sensor Based on Reduced Graphene Oxide Modified Electrode

2015 ◽  
Vol 1113 ◽  
pp. 411-416
Author(s):  
Nurulasma Zainudin ◽  
Mashitah M. Yusoff ◽  
Kwok Feng Chong
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Modified Electrode ◽  
Flow Injection ◽  
Flow Injection Analysis ◽  
Nitrite Oxidation ◽  
Nitrite Sensor ◽  
Reduced Graphene ◽  
Reagent Consumption ◽  
Electro Oxidation

Nitrite is one of the most frequently measured analytes in the environmental analysis due to its detrimental effect on the environment. The development of simple and sensitive analytical method for the detection of nitrite is highly important. In this study, we report the fabrication and testing of nitrite sensor based on the flow injection analysis by reduced graphene oxide modified electrode. The modified electrode exhibits enhanced electro oxidation behavior towards nitrite oxidation. The proposed method has advantages of high precision, lower sample consumption, lower reagent consumption, less dispersion of the sample as well as higher sensitivity.

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