文章基本信息

标题：Electroanalysis of Sodium Alizarin Sulfonate at Surfactant Modified Carbon Nanotube Paste Electrode: A Cyclic Voltammetric Study
本地全文：下载
作者：P. A. Pushpanjali ; J. G. Manjunatha
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2019
卷号：10
期号：10
页码：1-9
出版社：University of Mohammed Premier Oujda
摘要：The electroanalysis of Sodium Alizarin Sulfonate (SAS) was carried by cyclic voltammetric method at carbon nanotube paste electrode modified by the surfactant Sodium Dodecyl Sulfate (SDS) in the presence of 0.2 M Phosphate buffer solution (PBS) with the pH 6.5. The cyclic voltammogram produced an irreversible oxidative peak at 0.794 V, which corresponded to the oxidation of SAS. The effect of concentration of surfactant, pH and scan rate was also studied. The results acknowledge that the modified electrode displayed excellent catalytic property with promising sensitivity and selectivity towards the oxidation of SAS. This modified electrode was used for the simultaneous determination of SAS with Tartrazine (TZ). Under optimized conditions, the cyclic voltammetric peak currents corresponds to the oxidation of the SAS increased linearly with the concentration of SAS and the detection limit was obtained to be 5.90×10-7 M and limit of quantification was 19.69×10-7 M. Due to excellent detection limit, high sensitivity, selectivity, high reproducible property along with ease of preparation and regeneration of the surface of the electrode make this electrode very advisable for the determination of SAS.
关键词：Carbon nanotube; Sodium Dodecyl Sulfate; Sodium Alizarin Sulfonate; Tartrazine; Cyclic Voltammetry