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首页> 外文期刊>Electroanalysis >Electrochemical Behaviour of Carbamazepine in Acetonitrile and Dimethylformamide Using Glassy Carbon Electrodes and Microelectrodes
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Electrochemical Behaviour of Carbamazepine in Acetonitrile and Dimethylformamide Using Glassy Carbon Electrodes and Microelectrodes

机译:卡马西平在乙腈和二甲基甲酰胺中的电化学行为-玻璃碳电极和微电极

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摘要

The electrochemical reduction of carbamazepine in acetonitrile (ACN) and dimethylformamide (DMF) using a glassy carbon electrode and microelectrodes has been studied. The reduction process is consistent with an electrochemical-chemical mechanism (EC) involving a two electron transfer followed by a first order reaction, as shown by the cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Half-wave potential, number of electron transferred, diffusion coefficient and rate constant of the associated chemical reaction are reported. Limits of detection (LOD) for DPV are 0.92 and 0.76 μg mL~(-1) (3.89×10~(-6) mol L~(-1) and 3.21×10~(-6) mol L~(-1)) in ACN and DMF, respectively. Precision (%RSD) and recovery (%) values when pharmaceutical compounds (200mg carbamazepine tablets) and spiked plasma samples were tested ranged from 1.09 to 9.04% and % recoveries ranged from 96 to 104.1%.
机译:研究了使用玻璃碳电极和微电极对卡马西平在乙腈(ACN)和二甲基甲酰胺(DMF)中的电化学还原。如循环伏安法(CV)和微分脉冲伏安法(DPV)所示,还原过程与涉及两个电子转移然后发生一级反应的电化学-化学机理(EC)相一致。报告了半波电势,转移的电子数,扩散系数和相关化学反应的速率常数。 DPV的检出限(LOD)为0.92和0.76μgmL〜(-1)(3.89×10〜(-6)mol L〜(-1)和3.21×10〜(-6)mol L〜(-1 ))分别位于ACN和DMF中。测试药物化合物(200mg卡马西平片剂)和加标血浆样品时的精密度(%RSD)和回收率(%)值在1.09至9.04%的范围内,回收率百分比在96至104.1%的范围内。

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