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Preparation and electrochemical responses to nitric oxide (NO) of a platinum electrode modified with Nation-Cu (Ⅱ) L (L=1,8-diethanol-1, 3, 6, 8, 10, 13-hexaaza-14-cmwaa-4) are studied. The platinum electrode based on films of Cu (Ⅱ) L~(2+) and Nafion is found to show a low detection limit, high selectivity and sensitivity to NO determination. Nafion film was employed as a carrier of Cu (Ⅱ) L~(2+) and a barrier against some endogenous electroactive substances in biological tissues, such as ascordic acid (AA), L-arginine and nitrite (NO_2~-). In phosphate buffer solution (pH 7.4), the NO oxidation current measured by 1.5 order differential linear sweep voltammetry and the NO concentration showed a linear relationship in the range of 1.4×10~(-5)～2.8×10~(-7)mol/L.
Preparation and electrochemical responses to nitric oxide (NO) of a platinum electrode modified with Nation-Cu (II) L (L = 1,8- diethanol- 1, 3,6,8,10,13- hexaaza-14-cmwaa- 4) are studied. The platinum electrode based on films of Cu (II) L ~ (2+) and Nafion is found to show a low detection limit, high selectivity and sensitivity to NO determination. Nafion film was employed as a carrier of Cu (Ⅱ) L ~ (2+) and a barrier against some endogenous electroactive substances in biological tissues, such as ascordic acid (AA), L-arginine and nitrite (NO_2 ~ NO oxidation current measured by 1.5 order differential linear sweep voltammetry and the NO concentration showed a linear relationship in the range of 1.4 × 10 -5 to 2.8 × 10 -7 mol / L.