Electrochemical sensor for detecting roxarsone in animal-derived foods using MXene and silver telluride
Perumal Murugesan, Sakthivel Kogularasu, Yung‐Lung Chen, Yen‐Yi Lee, Guo‐Ping Chang‐Chien, Mani Govindasamy
Abstract
Detecting harmful feed additives in animal-derived foods is essential due to potential health and environmental risks. Given its toxicity, Roxarsone , a common organoarsenic compound , requires sensitive detection methods. This study introduces an electrochemical sensor using a glassy carbon electrode modified with 2D MXene (Ti 3 C 2 Tₓ) layered with silver telluride (Ag 2 Te). Characterization through XRD , FT-IR, and XPS confirmed the sensor's composition . Electrochemical assessments using cyclic voltammetry and differential pulse voltammetry showed notable electron transfer and catalytic efficiency improvements. The sensor exhibited a broad detection range for roxarsone (0.03–2310 μM) with an ultra-low detection limit (0.32 nM) and demonstrated excellent reproducibility (RSD < 3 %), stability, and selectivity . Real sample analysis in meat products confirmed its practical application, achieving high recovery rates. This work offers a robust approach for roxarsone detection, employing MXene and Ag 2 Te's synergistic properties to enhance food safety and environmental monitoring.