Application of Fe3O4@SiO2/MWCNT Film on Glassy Carbon Electrode for the Sensitive Electroanalysis of Levodopa

作者：Ganjali Mohammad Reza; Salimi Hadiseh; Tajik Somayeh; Beitollahi Hadi; Rezapour Morteza; Larijani Bagher

来源：International Journal of Electrochemical Science, 2017, 12(6): 5243-5253.

DOI：10.20964/2017.06.88

• Levodopa
• Fe3O4@SiO2/MWCNT nanocomposite
• Glassy carbon electrode
• Voltammetry

A Fe3O4@SiO2/MWCNT (FSCNT) film was coated on a glassy carbon electrode, and then electrochemical oxidation behavior of levodopa was considered in PBS (pH 7.0) by cyclic and differential pulse voltammetry (CV and DPV). The obtained results showed that the new electrode has an electrocatalytic activity in oxidation of levodopa which causes a remarkable enhancement in its oxidation current.. In the optimum conditions, the anodic peak current indicated a linear relation versus levodopa concentration in the range of 1.0 x 10(-5) to 6.0 x 10(-4) M with detection limits of 2.0 x 10(-6) M (signal-to-noise = 3). This method was used to the measurement of levodopa in urine samples.

• 出版日期2017-6