The ferrocene-lipid film electrode was successfully prepared by means ofcasting the solution of ferrocene and lipid in chloroform onto a glassy carbon (GC) electrodesurface. Ferrocene saved in the biological membrane ...The ferrocene-lipid film electrode was successfully prepared by means ofcasting the solution of ferrocene and lipid in chloroform onto a glassy carbon (GC) electrodesurface. Ferrocene saved in the biological membrane gave a couple of quasi-reversible peaks ofcyclic voltammogram. The electrode displays a preferential electrocatalytic oxidation of dopamine(DA). The effect of electrocatalytic oxidation of DA depends on the solution pH and the negativecharge lipid is in favor of catalytic oxidation of DA. The characteristic was employed forseparating the electrochemical responses of DA and ascorbic acid (AA). The electrode was assessedfor the voltammetric differentiation of DA and AA. The measurement of DA can be achieved withdifferential pulse voltammetry in the presence of high concentration of AA. The catalytic peakcurrent was proportional to the concentration of DA in the range of 1 x 10^(-4)―3x10^(-3) mol/L.展开更多
文摘The ferrocene-lipid film electrode was successfully prepared by means ofcasting the solution of ferrocene and lipid in chloroform onto a glassy carbon (GC) electrodesurface. Ferrocene saved in the biological membrane gave a couple of quasi-reversible peaks ofcyclic voltammogram. The electrode displays a preferential electrocatalytic oxidation of dopamine(DA). The effect of electrocatalytic oxidation of DA depends on the solution pH and the negativecharge lipid is in favor of catalytic oxidation of DA. The characteristic was employed forseparating the electrochemical responses of DA and ascorbic acid (AA). The electrode was assessedfor the voltammetric differentiation of DA and AA. The measurement of DA can be achieved withdifferential pulse voltammetry in the presence of high concentration of AA. The catalytic peakcurrent was proportional to the concentration of DA in the range of 1 x 10^(-4)―3x10^(-3) mol/L.
