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首页> 外文期刊>Materials science & engineering >Facile stripping voltammetric determination of haloperidol using a high performance magnetite/carbon nanotube paste electrode in pharmaceutical and biological samples
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Facile stripping voltammetric determination of haloperidol using a high performance magnetite/carbon nanotube paste electrode in pharmaceutical and biological samples

机译：高效磁铁矿/碳纳米管糊状电极在药物和生物样品中的快速溶出伏安法测定氟哌啶醇

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摘要

Multi-walled carbon nanotubes decorated with Fe_3O_4 nanoparticles were prepared to construct a novel sensor for the determination of haloperidol (Hp) by voltammetric methods. The morphology and properties of electrode surface were characterized by scanning electron microscopy (SEM) and electrochemical impedance spectrosco-py. This modified sensor was used as a selective electrochemical sensor for the determination of trace amounts of Hp. The peak currents of differential pulse and square wave voltammograms of Hp increased linearly with its concentration in the ranges of 1.2 × 10~(-3)-0.52 and 6.5 × 10~(-4)-0.52 umol L~(-1), respectively. The detection limits for Hp were 7.02 × 10~(-4) and 1.33 × 10~(-4) μmol L~(-1) for differential pulse and square wave voltammetric methods, respectively. The results show that the combination of multi-walled carbon nanotubes and Fe_3O_4nanoparticles causes a dramatic enhancement in the sensitivity of Hp quantification. This sensor was successfully applied to determine Hp in pharmaceutical samples and biological fluids. The fabricated electrode showed excellent reproduc-ibility, repeatability and stability.
机译：制备了以Fe_3O_4纳米粒子修饰的多壁碳纳米管，以构建用于通过伏安法测定氟哌啶醇（Hp）的新型传感器。用扫描电子显微镜（SEM）和电化学阻抗谱对电极表面的形貌和性能进行了表征。该改进的传感器用作选择性电化学传感器，用于测定痕量的Hp。在浓度为1.2×10〜（-3）-0.52和6.5×10〜（-4）-0.52 umol L〜（-1）范围内，Hp的差分脉冲和方波伏安图的峰值电流线性增加，分别。差分脉冲法和方波伏安法测定Hp的检出限分别为7.02×10〜（-4）和1.33×10〜（-4）μmolL〜（-1）。结果表明，多壁碳纳米管和Fe_3O_4纳米粒子的组合显着提高了Hp定量的灵敏度。该传感器已成功应用于测定药物样品和生物液体中的Hp。制成的电极显示出极好的可重复性，可重复性和稳定性。

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