▎ 摘　　要

A simple, selective and sensitive graphene nanosheets-Ag nanoparticles hybrid ionic liquid electrode (GNSs-AgNPs/ILE) was used for the electrochemical determination of thiourea (TU). Cyclic voltammogram of TU showed two well defined oxidation signals at the potentials of -0.2 and 0.1 V vs. Ag/AgCl. Amperometric method was used for quantification of TU in the range of 1.0-3000 mu M. The theoretical detection limit was obtained as 0.7 mu M. The sensor was successfully applied for TU determination in orange juice and waste water. (C) 2014 Elsevier B.V. All rights reserved.