Abstract: A sensitive electrochemical method was developed for the determination of bisphenol A at a glassy carbon electrode(GCE)method with a multi-wall carbon nanotubes(MWNT)film.GCE modified with MWNT film exhibited excellent electrochemical behavior toward the oxidation of bisphenol A.At an accumulation potential of 0.3 V,bisphenol A was preconcentrated on an electrode modified with MWNT film.Then a linear scan voltammogram was recorded by an anodic potential scanner after 10 s of quiescent time from 0.3 V to 0.9 V at a scan rate of 100 mV/s.An anodic peak current was obtained at about 0.58 V.The experimental parameters,which influence the oxidation current of bisphenol A,such as the amount of MWNT on the GCE surface,the pH of the supporting electrolyte,and scan rate,were optimized.Under the optimal conditions,a linear response of bisphenol A was obtained over the range from 5.0?10-5 mol·L-1 and with a limit of detect(LOD)of 2.0?10-8 mol·L-1.The proposed procedure was applied to determine the amount of bisphenol leached from waste plastic samples.