碳糊电极阳极吸附伏安法测定雷贝拉唑
Determination of rabeprazole at a carbon paste electrode by anodic adsorptive voltammetry
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摘要: 目的: 建立测定雷贝拉唑含量的新方法。 方法: 采用碳糊电极阳极吸附伏安法,在1.8mol/L H2SO4底液中,通过富集用碳糊电极阳极吸附伏安法研究雷贝拉唑的电化学行为。 结果: 阳极峰电位为0.498V（vs.SCE）,峰电流与雷贝拉唑的浓度在4.15×10-7-3.37×10-6mol/L范围内呈良好的线性关系,检出限为6.705×10-11mol/L。 结论: 本方法简便准确,适用于雷贝拉唑的含量测定。Abstract: Objective: To establish a new method for the determination of rabeprazole. Methods: Anodic adsorptive voltammetry with a carbon paste electeode(CPE) was used. Rabeprazole was concentrated on the electrode and determined by adsorptive voltammetry in supporting solution of 1.8 mol/L H2SO4. Results: The anthodic peak potential of raberazole was at 0.498 V(vs.SCE). The peak currents were linear with the concentration of rabeprazole over the range of 4.15×10-7～3.73×10--6mol/L, with the detection limit 6.705×10--11 mol/L. Conclusion: This method is suitable for the determination of rabeprazole, and it is covenient and accurate.
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Key words:
- rabeprazole /
- canbon paste etectrode /
- anodic adsorptive voltammetry
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