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Voltammetric Peak Enhancement of Cefpirome in Cetyltrimethylammonium Bromide

机译:十六烷基三甲基溴化铵中头孢菌素的伏安峰增强

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The objective of the present work is to develop a voltammetric method for the determination of cefpirome in bulk and pharmaceutical formulations and it also deals with the beneficial use of surfactants in the catalysis of electrode reactions. The voltammetric behaviour of cefpirome in Britton Robinson buffer solutions over the pH range 2.0-12.0 using differential pulse voltammetry and cyclic voltammetry has been studied in surfactant media. In the entire pH range a well defined cathodic and anodic peak were observed in cyclic voltammetry. Number of electron transferred in the reduction process was calculated and the reduction mechanism has been postulated on the basis of controlled potential electrolysis and coulometry. The proposed differential pulse voltammetric method allows quantitation over the range 1.0 mgmL~(-1) and 62 μgmL~(-1) with detection limit of 1.2 μgmL~(-1) respectively. The analysis of cefpirome in pharmaceutical formulation exhibited the mean recoveries of 99.7% for the reduction peak.
机译:本工作的目的是开发一种用于测定散装和药物制剂中头孢哌啶的伏安法,并且还涉及表面活性剂在电极反应催化中的有益用途。在表面活性剂介质中,使用微分脉冲伏安法和循环伏安法研究了pH范围为2.0-12.0的Britton Robinson缓冲溶液中头孢吡酮的伏安行为。在整个pH范围内,在循环伏安法中观察到明确定义的阴极和阳极峰。计算了在还原过程中转移的电子数,并基于受控电势电解和库仑法推测了还原机理。所提出的差分脉冲伏安法可在1.0 mgmL〜(-1)和62μgmL〜(-1)范围内进行定量,检出限分别为1.2μgmL〜(-1)。药物制剂中头孢哌酮的分析显示出还原峰的平均回收率为99.7%。

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