An　electrochemiluminescent　(ECL)　detection　system　in　CF　with　an　electrically　heated　carbon　paste　electrode　(CPE)　was　developed.　This　CPE　could　be　heated　by　a　100　kHz　alternating　current　(ac)　generated　from　a　function　generator,　and　the　temperature　of　the　electrode　(Te)　could　be　controlled.　To　evaluate　the　feasibility　and　reliability　of　this　system,　the　electrochemically　generated　Ru　(bpy)33+-based　ECL　reaction　was　used　for　detection　of　triethylamine　(TEA)　and　tri-n-propylamine　(TPrA).　Ru(bpy)32+　was　added　into　the　separation　buffer　solution　with　precolumn　mode.　Effects　of　several　important　factors　were　investigated　to　acquire　the　optimum　conditions.　Under　the　optimum　conditions,　the　heated　electrode　has　been　shown　to　provide　advantages　by　the　measurement　of　ECL　intensity　in　CE　at　elevated　Te.　Compared　with　the　conventional　electrode　at　the　room　temperature,　using　heated　CPE　could　improve　peak　shape　and　gain　good　reproducibility　with　lower　detection　limits　and　wider　linearity　ranges.　Compared　with　the　room　temperature,　the　linear　ranges　and　detection　limits　(S/N　=　3)　for　TEA　and　TPrA　were　improved　about　one　magnitude　when　the　Te　was　39°C.　In　contrast,　the　RSD　was　lower　than　for　the　electrode　at　room　temperature.　©　2007　Wiley-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim.