Carbon Paste Electrodes (CPE) modified with Grapefruit‐Peels (GP) functionalized with Urea (GPU) and, Melamine (GPM) were designed for the detection of Ag+ in water. Taguchi L9 methodology was used to determine the optimal graphite‐Active material ratio. The best electrochemical response was for CPE‐GPU with an 80 : 20 ratio. The results obtained showed a linear detection range between 0.5 to 28 μg L−1, with a detection limit of 0.73 μg L−1 and a limit of quantification of 1.04 μg L−1. Attributable to CPE‐GPU characteristics: electroactive surface area 0.175 cm2, roughness factor 3.87, resistance 0.09 Ω and, mostly −NH2 groups on its surface. The composite material offers a viable option to be used for the determination of silver traces in situ in industrial processes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.