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首页> 外文期刊>RSC Advances >Taking advantage of CTAB micelles for the simultaneous electrochemical quantification of diclofenac and acetaminophen in aqueous media
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Taking advantage of CTAB micelles for the simultaneous electrochemical quantification of diclofenac and acetaminophen in aqueous media

机译：利用CTAB胶束同时对水介质中的双氯芬酸和对乙酰氨基酚进行电化学定量

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摘要

From spectrophotometric and electrochemical techniques, it was shown that cetyltrimethylammonium bromide, CTAB, hemimicelles, formed on the surfaces of a carbon paste electrode (CPE), selectively adsorbed diclofenac, DCF, molecules from a neutral aqueous solution of DCF and acetaminophen, ACT. This CTAB–DCF interaction is so important that it modified the DCF electrochemical oxidation mechanism from a mass-transferred controlled one (in the absence of CTAB) to an adsorption controlled mechanism which allows the simultaneous quantification of both drugs. This novel methodology was used for the individual and simultaneous quantification of DCF and ACT in both aqueous media and synthetic urine. Moreover, it is shown that the analytical method proposed in this work is similar or even better than other more sophisticated and expensive techniques available.
机译：从分光光度法和电化学技术中可以看出，在碳糊电极（CPE）的表面上形成的十六烷基三甲基溴化溴化物CTAB，半胶束从DCF和对乙酰氨基酚ACT的中性水溶液中选择性吸附了双氯芬酸DCF和分子。 CTAB-DCF的相互作用是如此重要，以至于将DCF电化学氧化机制从传质受控的机制（在没有CTAB的情况下）改变为吸附受控的机制，从而可以同时定量两种药物。这种新颖的方法用于在水性介质和合成尿液中对DCF和ACT进行单独定量和同时定量。此外，已表明，这项工作中提出的分析方法与其他可用的更复杂，更昂贵的技术相似，甚至更好。

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