Electrochemical detection of hydroquinone using yttrium oxide-nafion modified glassy carbon electrodes

Cosco-Salguero G.A.; Nagles E.; Penagos-Llanos J.; Segura R.; Hurtado J. · International Journal of Electrochemical Science (2025) · DOI: 10.1016/j.ijoes.2025.101151

Resumen

In this article, we report for the first time a novel method for developing modified electrodes using only yttrium oxide and Nafion on glassy carbon (N-YOX/GCE) as well as the application of this method for detecting hydroquinone (HQ). Cyclic voltammetry (CV) and scanning electron microscopy (SEM) were used to characterize the surface and activity of N-YOX/GCE. This simple electrode showed higher selectivity for the electrooxidation of HQ than catechol, with a limit of detection of 1.0 µmol/L under acidic conditions. The utility of the sensor was tested with real samples of human urine and drinking water spiked with hydroquinone.

Instituciones: Universidad Nacional Mayor de San Marcos