Hybrid film Amines 2 Ascorbic acid 2 Chemical detection 2 Cyclic voltammetry 2 Dopamine 2 Electrochemical determination 2 Electrochemical impedance spectroscopy 2 Electrochemical techniques 2 Electrochemical treatment 2 Electrochemical treatments 2 Energy dispersive spectroscopy 2 Glass membrane electrodes 2 Glassy carbon electrodes 2 Multiwalled carbon nanotubes 2 Multiwalled carbon nanotubes (MWCN) 2 Neurophysiology 2 Oxidation 2 Scanning electron microscopy 2 Selective determination 2 Serotonin 2 Yarn 2 Azo dye 1 Biosorbent 1 Chitosan 1 PVA 1 Physical cross-linking 1 Química 1