Abstract
A novel SnO2/chitosan (CHIT) nanocomposite modified glassy carbon electrode has been successfully fabricated for simultaneous determination of ascorbic acid (AA), Dopamine (DA), and uric acid (UA) via cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The structure and morphology of SnO2/CHIT nanocomposite was characterized by UV–visible-spectroscopy, infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and BET-surface area techniques. The modified GCE exhibits potential electron mediating behavior than bare electrode. The ternary mixture containing AA, DA and UA could be well separated from each other at a scan rate of 0.050V with potential difference of 0.168V, 0.326V and 0.612V in CV, 0.178V, 0.337V and 0.592V in DPV between AA and DA, DA and UA, UA and AA, respectively. DPV studies shows that there is a linear relationship between the peak current and concentration in the concentration range of 20–220µM for AA, 1–18µM for DA, and 1–100µM for UA, with the detection limits (S/N= 3) of 6.45µM, 0.77µM and 0.89µM for AA, DA and UA, respectively. The proposed method was applied for the simultaneous determination of AA, DA and UA, in real samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
