A　new　capillary　electrophoresis-electrochemiluminescence　(ECL)　detection　system　equipped　with　an　electrically　heated　Ru(bPY)(3)(2+)/multi-wall-carbon-nanotube　paste　electrode　(Ru(bPY)(3)(2+)/MWNTPE)　was　developed.　Ru(bpy)(3)(2+)　was　immobilized　in　the　electrode　by　directly　mixing　with　the　multi-wallcarbon-nanotube　paste　(MWNTP).　This　modified　electrode　could　be　electrically　heated　and　temperature　of　the　electrode　(Te)　could　be　accurately　controlled.　Tri-n-propylamine　(TPrA)　was　used　as　coreactant　to　investigate　CE-ECL　signals　under　different　conditions.　Compared　with　the　conventional　electrode　at　room　temperature,　the　heated　electrode　has　been　shown　to　provide　some　advantages,　such　as　higher　sensitivity,　lower　RSD,　and　decreasing　width　of　the　peak.　Furthermore,　wider　range　of　capillary-to-electrode　distance　and　larger-area　electrode　are　a　benefit　to　CE-ECL.　In　addition,　this　system　has　been　applied　to　separation　and　detection　of　acephate　and　dimethoate.　The　results　indicated　that　the　present　CE-ECL　system　coupled　with　heated　modified-electrode　could　provide　high　sensitivity,　wide　linear　range,　satisfying　linear　relationship　and　excellent　reproducibility.　(c)　2007　Elsevier　B.V.　All　rights　reserved.