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Isotretinoin Oxidation and Electroanalysis in a Pharmaceutical Drug Using a Boron-doped Diamond Electrode

机译:掺硼金刚石电极在药物中异维A酸的氧化和电分析

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Isotretinoin redox behaviour, by voltammetry, at the cathodic pre-treated boron doped diamond electrode by cyclic, differential pulse and square wave voltammetry, and by spectrophotometry in a wide pH range, was investigated. The isotretinoin oxidation was an irreversible, diffusion-controlled process, occurred in a three-step cascade mechanism, and the isotretinoin diffusion coefficient D13-cis-RA=7.35x10(-6)cm(2)s(-1), was calculated. The UV-Vis isotretinoin maximum absorption was pH-dependent. The detection limits LOD=0.53M, by differential pulse voltammetry, and LOD=0.38M, by UV-Vis spectroscopy, were obtained. The isotretinoin in the pharmaceutical drug Roacutan((R)), using differential pulse voltammetry, was determined.
机译:通过循环伏安法,差示脉冲法和方波伏安法在宽pH范围内用分光光度法研究了阴极预处理的硼掺杂金刚石电极上的异维A酸氧化还原行为。异维A酸的氧化是不可逆的扩散控制过程,发生在三步级联机制中,计算出异维A酸的扩散系数D13-cis-RA = 7.35x10(-6)cm(2)s(-1)。 。 UV-Vis异维A酸的最大吸收是pH依赖性的。通过微分脉冲伏安法获得了检测限LOD = 0.53M,并且通过UV-Vis光谱法获得了LOD = 0.38M。使用差分脉冲伏安法测定了药物Roacutan(R)中的异维A酸。

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