▎ 摘　　要

A novel electrochemiluminescence (ECL) sensor for napropamide determination was prepared using the water-soluble sulfonated graphene (sulfonated-G) as solid-phase microextraction (SPME) material, based on selective preconcentration of target onto an electrode and followed by luminol ECL detection. The effects of pH, adsorption time, buffer solution and the luminescence agent on ECL intensity were optimized. Under the optimized conditions (pH6; adsorption time 5min; buffer solution pH11.0 Na(2)CO(3)aHCO(3); luminescence agent luminol; stirring speed 400rpm), the lowest detection limits (1.0 mu gL(-1)) and good linear range (r(2)0.99) were obtained for the analyte, indicating the superior performance of Nafion/sulfonated-G/GCE for detecting napropamide.