▎ 摘　　要

NOVELTY - A tungsten sulfide-graphene electrochemical sensor comprises a glassy carbon electrode and a tungsten sulfide-graphene sensitive film coated on a surface of a glassy carbon electrode. USE - Tungsten sulfide-graphene electrochemical sensor for detecting hydroquinone, catechol and resorcinol (all claimed). ADVANTAGE - The tungsten sulfide-graphene electrochemical sensor has high sensitivity and stability, and is prepared in a simple and inexpensive manner. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing tungsten sulfide-graphene electrochemical sensor by weighing oxidized graphite alkene, adding water and tungsten compound, treating ultrasonically, adjusting pH of the resultant solution to 6.5 by adding sodium hydroxide, adding cysteine, transferring to stainless steel hydro-thermal reaction kettle, sealing reactor, treating at 180 degrees C, cooling naturally, filtering, washing by water and ethanol wash for 5 times, drying at 80 degrees C for 24 hours under vacuum to obtain a finished product (2) a method for applying tungsten sulfide-graphene electrochemical sensor by measuring medium with phosphate buffering solution at pulse amplitude 0.05 V, for 0.5 seconds at scanning range of -0.6-1 V.