Electrochemical Measurement of Β-Nicotinamide Adenine Dinucleotide by ZrO2 Modified Carbon Paste Electrode

Mazloum-Ardakani, Mohammad; Lajmorak, Neda; Alizadeh, Zahra; Mohammadian-Sarcheshmeh, Hamideh; Abdollahi, Mohammad; Mirjalili, Bi Bi Fatemeh

doi:10.22034/abec.2023.708104

Electrochemical Measurement of Β-Nicotinamide Adenine Dinucleotide by ZrO2 Modified Carbon Paste Electrode

Document Type : Original Article

Authors

Mohammad Mazloum-Ardakani

Neda Lajmorak

Zahra Alizadeh

Hamideh Mohammadian-Sarcheshmeh

Mohammad Abdollahi

Bi Bi Fatemeh Mirjalili

Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran

10.22034/abec.2023.708104

Abstract

In this research, the electrochemical performance of carbon paste electrode modified with 4-(3,5-dimethyl-1,4,7,8-tetrahydrodipyrazolo[3,4-b: 4^', 3^'-e] pyridin-4-yl)benzene-1, 3-diol (DBC) and zirconium dioxide nanoparticles (ZrO₂) are investigated for the electrocatalytic oxidation of β-nicotinamide adenine dinucleotide (NADH). The kinetic parameters, transfer coefficient (α), and apparent charge transfer rate constant (k_s) were obtained 0.31 and 4.83 s^-1, respectively by the cyclic voltammetry (CV) technique. The anodic peak potential of the DBC modifier depends on pH and has a linear range with a slope of 0.047 V/pH. Also, the performance of the modified electrode in the electrocatalytic oxidation of NADH is investigated. It was observed that in the presence of the modifier, the overvoltage related to the oxidation of NADH decreases significantly and its oxidation potential decreases by about 300 mV. Also, the diffusion coefficient (D) between the species and the electrode surface was calculated (D=1.93×10^-6 cm² s^-1) using the chronoamperometric method. Using the differential pulse voltammetry method (DPV), the detection limit of 5.8 nM was acquired. Two linear concentration ranges of 0.01-1.0 µM and 1.0-350.0 µM for NADH were obtained. The modified electrode was used to quantitatively analyze NADH in the blood serum sample. Also, this electrode can be acceptably utilized for the simultaneous measurement of NADH and ascorbic acid species.

Keywords

Ascorbic acid

β-nicotinamide adenine dinucleotide

Carbon paste electrode

ZrO2

Subjects