Abstract
This work fabricated an electrochemical sensor for detecting bisphenol A (BPA) by employing silver nanoparticles (AgNPs) synthesized through an eco-friendly approach. The AgNPs were produced using parsley leaf extract, which acted as a reducing and stabilizing agent in the synthesis process. The AgNPs synthesized using the green approach exhibited an average size of 15.2 ± 2.1 nm. The AgNP-modified screen-printed electrode (SPE) exhibited excellent electrocatalytic activity towards BPA oxidation, with an enhanced peak current of 28.6 μA compared to 5.2 μA for the bare SPE. The optimized sensor exhibited impressive analytical performance, boasting a broad linear range spanning 0.05–5 μM for BPA detection. Remarkably, it achieved a low limit of detection of 0.02 μM, coupled with high sensitivity. Furthermore, the sensor demonstrated commendable reproducibility, with a RSD of 3.6%, and exceptional repeatability, evidenced by an RSD of 2.4%. Upon evaluating the sensor's performance in analyzing real water specimens, the recoveries oscillated between 95.8% and 103.5%, accompanied by RSDs not exceeding 4.2%, thereby demonstrating its successful application for BPA detection. The eco-friendly synthesis approach and superior analytical performance make the AgNP-modified SPE a promising tool for on-site environmental monitoring and drinking water analysis.
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