【摘要】 采用循环伏安法(CV)、差分脉冲伏安法(DPV)和方波伏安法(SWV)在玻碳电极(GCE)上对痢菌净进行了电化学研究。实验表明:在pH=6.6的B-R缓冲底液中,痢菌净在-0.85伏左右有一个明显的可逆氧化还原峰,考察了不同底液及pH值、扫描速度、富集时间和静止时间的影响。DPV法其线性范围为2.0×10-6mol/L～2.0×10-3mol/L,检出限为5.0×10-8mol/L;SWV法其线性范围为2.0×10-6mol/L～1.0×10-3mol/L,检出限为2.0×10-8mol/L。并对痢菌净的电极反应机理进行了初步探讨,该方法操作简单、灵敏,可用于实际药品测定。更多还原

【Abstract】 Cyclic voltammetry,differential-pulse stripping voltammetry,and square wave voltammetry were used to investigate the electrochemical behavior of maquinox at a glassy carbon electrode and a new method for detection of maquinox was established.The maquinox showed a sensitive reductive peak at-0.8 5V(vs.SCE)using cyclic voltammetry in a B-R solution.The impact of buffer solution,pH,accumulation time and scan rate were discussed.The peak current was linear to the concentration of maquinox ranging from 2.0×10-6 mol/L-2.0×10-3 mol/L with a detection limit of 5.0×10-8 mol/L by DPV,and ranging from 2.0×10-6 mol/L-1.0×10-3 mol/L with a detection limit of 2.0×10-8 mol/L by SWV.The determination of maquinox has been performed and the possible mechanism for the electrode process was also proposed.更多还原