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MWCNT-CTAB modified glassy carbon electrode as a sensor for the determination of paracetamol

机译：MWCNT-CTAB修饰的玻碳电极作为对乙酰氨基酚的测定传感器

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摘要

An electrochemical sensor for the sensitive detection of paracetamol (PCM) was developed by constructing a glassy carbon electrode (GCE) modified with multiwalled carbon nanotube-cetyltrimethyl ammonium bromide (MWCNT-CTAB). Modification improves the redox kinetics of PCM with increased current intensity. A similar modification at CTAB modified GCE did not result in an impressive charge transfer. The detection limit of PCM was determined from a differential pulse voltammetric (DPV) study and found to be 4.82 x 10(-9) M with a linear dynamic range of 4.0 x 10(-7) M to 4.0 x 10(-6) M. The interference studies showed that the modified electrode exhibits excellent selectivity in the presence of a large excess of interferents and the response is fast, stable, reliable, resistant to biofouling and can be applied for real sample analysis in medical, pharmaceutical and biotechnological sectors. Kinetic parameters were determined using electrochemical approaches. The practical analytical application of this electrode was demonstrated by measurement of the PCM content in a PYREMOL 650 tablet and real sample analysis.
机译：通过构建用多壁碳纳米管-鲸蜡基三甲基溴化铵（MWCNT-CTAB）修饰的玻璃碳电极（GCE），开发了用于对乙酰氨基酚（PCM）灵敏检测的电化学传感器。修饰通过增加电流强度来改善PCM的氧化还原动力学。 CTAB修改的GCE的类似修改并没有产生令人印象深刻的电荷转移。 PCM的检出限由微分脉冲伏安（DPV）研究确定，发现为4.82 x 10（-9）M，线性动态范围为4.0 x 10（-7）M至4.0 x 10（-6） M.干扰研究表明，改性电极在存在大量过量干扰物的情况下表现出出色的选择性，并且响应快速，稳定，可靠，抗生物结垢，可用于医疗，制药和生物技术领域的真实样品分析。使用电化学方法确定动力学参数。通过测量PYREMOL 650片剂中的PCM含量和实际样品分析证明了该电极的实际分析应用。

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