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.
