▎ 摘　　要

NOVELTY - The process involves performing chemical polymerization of pyrrole in the presence of phosphomolybdic acid, followed by the step of electrochemical functionalization of a working electrode such as a screen-printed electrode made of carbon modified with graphene oxide, using electrolyte aqueous solution of pyrrole, phosphomolybdic acid and sulfuring acid, by cyclic voltammetry in the potential range, resulting in screen-printed electrodes of carbon modified with graphene oxide functionalized with conductive polymer of polypyrrole type doped with phosphomolybdic acid heteropolyanions, having constant vibrational properties, without modifications, during storage for two months in ambient conditions. USE - Process for manufacturing screen-printed electrodes of carbon, modified with graphene oxide functionalized with conductive polymer, used as sensors in field of electrochemical detection of folic acid or other pollutants.