The　electrochemiluminescent　behavior　of　lucigenin　on　a　single-wall　carbon　nanotube/DMF　film-modified　glassy　carbon　electrode　was　studied　in　this　paper.　Comparing　with　the　bare　glassy　carbon　electrode,　the　electrochemiluminescent　of　lucigenin　at　modified　electrode　is　more　stable　and　without　tedious　procedure　for　clean-up　the　surface　of　modified　electrode.　It　has　been　found　that　ascorbic　acid　could　enhance　the　electrochemiluminescent　intensity　of　lucigenin　greatly　at　this　modified　electrode.　Based　on　which,　a　new　sensitive　and　simple　electrochemiluminescent　method　for　determination　of　ascorbic　acid　could　be　developed.　The　condition　for　the　determination　of　ascorbic　acid　was　optimized.　Under　the　optimized　condition.　the　enhanced　electrochemiluminescent　intensity　versus　ascorbic　acid　concentration　was　linear　in　the　range　of　1.0　x　10(-8)　to　4.0　x　10(-6)　mol/L　with　a　detection　limit　of　2.0　x　10(-10)　mol/L,　and　the　relative　standard　derivation　for　1.0　x　10(-7)　mol/L　ascorbic　acid　was　3.8%　(n　=　8).　The　possible　mechanism　was　also　discussed.　(c)　2007　Elsevier　Ltd.　All　rights　reserved.