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Electrochemical Investigation of Glucose Oxidation on a Glassy Carbon Electrode Using Voltammetric, Amperometric, and Digital Simulation Methods
Author(s) -
Raziq Abdul,
Tariq Muhammad,
Hussian Riaz,
Mehmood Muhammad Haris,
Khan Muhammad Saleem,
Hassan Ayaz
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701193
Subject(s) - cyclic voltammetry , amperometry , ascorbic acid , detection limit , glassy carbon , electrochemistry , analytical chemistry (journal) , chemistry , electrode , electron transfer , electrocatalyst , voltammetry , inorganic chemistry , materials science , chromatography , food science
In this paper, we report the use of glassy carbon electrode for electrochemical oxidation of glucose in basic medium. The effect of glucose concentration, scan rate, and point potential was studied. Heterogeneous electron transfer parameters such as standard electron transfer rate constant (k 0 ), transfer coefficient (α), and E 0 were calculated using cyclic voltammetry (CV), semi integration of cyclic voltammetry (SICV), semi differentiation of cyclic voltammetry (SDCV), and digital simulation techniques. Amperometric experiments were performed for determination of glucose concentration in basic media. These experiments show a broad linear concentration range, up to 11 mM with a sensitivity of 927.96 μAmM −1 cm −2 . The lower detection limit (LOD) and Lower Quantification limit (LOQ) were found to be 50 μM and 0.5 mM, respectively. Effect of interfering species such as uric acid, ascorbic acid, acetaminophen, and chloride ion on the electrocatalytic behavior of glassy carbon electrode (GCE) was also studied.