Electrochemical characters of hymecromone at the graphene modified electrode and its analytical application

摘要

In this paper, a modern popular simple voltammetric sensor, graphene modified electrode (GR/GCE), was employed for studying the electrochemical characters of hymecromone. The electrode reaction of hymecromone was investigated systematically for the first time and some kinetic parameters were calculated. The reaction mechanism of hymecromone at the GR/GCE was also discussed. Based on the enhancement sensing of the GR/GCE for hymecromone, a sensitive electroanalytical method was developed with a detection linear range of 8 x 10(-8) to 6 x 10(-6) mol L-1 and a detection limit of 4 x 10(-8) mol L-1, which were obtained under accumulation for only 180 s. For proving the practical applicability of the proposed method, the determination of hymecromone in real samples was carried out with satisfactory results.