Development of a nano-modified glassy carbon electrode for the determination of 2,6-diaminotoluene (TDA)

The objective of this study was to improve the overall performance a glassy carbon electrode (GCE) for detection 2,6-diaminotoluene (TDA), possibly carcinogenic primary aromatic amines (PAAs) that poses serious risk consumer’ health because they can transfer from multilayer food packages including adhesives based on polyurethane (PU) systems, food. modification surface made by means multi-walled nanotubes (MWCNTs) and mesoporous nanoparticles (MCNs). MWCNTs-MCNs/GCE allowed achieving best in terms sensitivity, as revealed cyclic voltammetry – CV, with an oxidation peak 20.95 μA over 0.079 bare GCE. pH medium influenced 2,6-TDA, highest sensitivity at ∼7. Amperometry experiments led estimated limit 0.129 μM, three linear ranges were obtained 2,6-TDA: 0.53–11.37 11.37–229.36 229.36–2326.60 μM. Chronoamperometry combined Cottrell’s theory estimating diffusion coefficient 2,6-TDA 1.34 × 10−4 cm2s−1. number electrons (n∼1) involved catalytic determined according Laviron’s theory. Real sample tests demonstrated sensor using nanoparticls obtain highly sensitive selective sensor, which used alternative analytical device rapid, easy, reliable determination 2,6-TDA.