Sensitive Electrochemical Determination of Chlorocresol Using MWCNT Modified Glassy Carbon Electrode

In this research project, an electrochemical sensor was developed to sensitively detect chlorocresol at a new level of glassy carbon using carbon nanotubes. The surface morphology of the modified electrode was determined by field emission scanning electron microscopy. Under optimal conditions, a significant improvement in the electrochemical behavior of chlorocresol was observed at the surface of the modified electrode compared to the unmodified electrode. Electrode modified by carbon nanotubes due to its high conductivity, good stability, ability to increase the electron transfer rate, and finally, the effective interaction of the analyte with the electrode surface increases the sensitivity in measuring chlorocresol and its electrocatalytic properties. As an electrochemical sensor improved analyte drug measurement. The transfer coefficient (α), the number of electrons involved in the rate-determining step, was calculated for the modified electrode using cyclic voltammetry data. Under the optimal condition, the liner range of the calibration graph was between 0.39 to 2.37 and 2.37 to 7.2 µm, and the detection limit was reported as 0.27 µm. The results showed that the mentioned sensor had remarkable repeatability and stability during the tests, and satisfactory results were obtained in the determination of chlorocresol with the modified electrode in blood serum samples.