Silva, Martin [UNESP]Cesarino, Ivana [UNESP]2021-06-252021-06-252019-01-01Journal of Composites Science, v. 3, n. 2, 2019.2504-477Xhttp://hdl.handle.net/11449/205146A nanocomposite based on reduced graphene oxide (rGO) and gold nanoparticles (AuNPs) was synthesized by the microwave-assisted hydrothermal method and applied in the determination of sulfamethazine (SMZ) in swine effluent using a glassy carbon (GC) electrode. The rGO-AuNPs nanocomposite was characterized morphologically, electrochemically and spectrochemically, showing that rGO was modified with the AuNPs. The GC/rGO-AuNPs electrode was optimized for the determination of SMZ, achieving detection limits of 0.1 µmol L−1 . The proposed sensor was successfully applied to the determination of SMZ in synthetic swine effluent samples.engGold nanoparticlesGrapheneNanocompositeSulfamethazineArtigo10.3390/jcs30200592-s2.0-85086476044