制备了石墨烯修饰玻碳电极(GN/GCE).在0.05moL/L H2SO4溶液中,用循环伏安法研究了多贝斯在GN/GCE上的电化学行为.结果表明,GN/GCE对多贝斯的氧化还原反应有明显的电催化作用.建立了测定多贝斯的新方法,用微分脉冲伏安法测得多贝斯的氧化峰电流与其浓度在2.0×10-9～1.2×10-6 mol/L范围内呈线性关系,检出限为1.0×10-9 mol/L(S/N =3).该法可用于胶囊中多贝斯的测定,修饰电极有较好的稳定性和重新性.
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