Investigating the sensitivity and selectivity of electrochemical sensors based on nanomaterials for the detection of carbendazim residue in cherry wine

This work addresses a major issue in food safety and environmental monitoring by introducing a nanocomposite-based sensor for the efficient detection of carbendazim (CBZ), a common fungicide, in cherry wine. The sensor for the detection of CBZ in cherry wine residue was created using a nanocomposite of polythiophene (PTH) and graphitic carbon nitride (g-C₃N₄). SEM, XRD, and FTIR material characterization techniques yielded strong proof of the PTH-g-C₃N₄ nanocomposite’s effective creation and its prospective uses in a variety of sectors, including environmental remediation and energy storage. The electroception method was used to create a novel electrode based on PTH and g-C₃N₄. Under ideal conditions, cyclic voltammetry (CV) and differential pulse voltammetry (DPV), a highly sensitive electrochemical technique, were used to measure minuscule amounts of CBZ. The dynamic potential difference (DPV) responses of CBZ at different concentrations at the PTH-g-C₃N₄/GCE in 0.1 M PBS (pH 7.0) demonstrated that the sensor’s linear range was 100 nM to 85 µM, and that the DPV detection limit and sensitivity were, respectively, 0.37 nM and 3.95562 µA/Mm. The sensor’s ability to identify CBZ concentrations in samples of cherry wine residue was evaluated. The CBZ concentration in actual samples was ascertained using the standard addition curves and the standard addition method. The method’s accuracy and precision were confirmed by the findings, which showed average recovery rates over 90.00% and relative standard deviation (RSD) values below 4.58%.