Electrocatalysis Properties of Glassy Carbon Electrode Modified with Poly lamotrigine and Its Electrochemical Behavior

KeyWord:poly lamotrigine film  glassy carbon electrode  NO-2  electrocatalysis

Abstract:

      A glassy carbon electrode modified with poly lamotrigine film£¨PLTG/GCE£© was fabricated. The poly lamotrigine film was deposited at the glassy carbon electrode by cyclic voltammetry in H2SO4 solution. The electrode was characterized by alternating current£¨AC£© impedance. NO-2 was determined by the differential pulse voltammetry£¨DPV£© using the electrode in KH2PO4 and Na2HPO4 buffer solution. The modified electrode exhibited good electrocatalytic response to the oxidation of nitrite£®A good linear relationship was obtained between the anodic peak currents and NO-2 concentrations in the range of 9ª±6¡Á10-6-1ª±1¡Á10-3 mol?L-1 £¨correlation coefficient r=0ª±998 8£© with a detection limit of 3ª±2¡Á10-6 mol?L-1. The proposed method was applied for the determination of NO-2 in real water samples with satisfactory results.