Abstract

A novel and eco-friendly electrochemical sensor was developed for the determination of carbendazim using a lab-fabricated screen-printed carbon electrode (SPCE) modified with two carbon-based materials: carbon derived from waste wind-turbine blades and carbon nanotubes. The modified electrode exhibited a significantly enhanced oxidation response toward carbendazim compared to the unmodified SPCE. Under the optimized conditions, the sensor demonstrated a linear response in a range of 2–50 µM with a detection limit of 0.5 µM. The developed electrochemical sensor demonstrated excellent stability for up to 30 days, high reproducibility, selectivity, and accuracy, along with satisfactory performance in real-sample analysis. Furthermore, the fabrication and detection process are simple, cost-effective, rapid, and requires minimal chemical consumption.