Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

A Simple Strategy for the Simultaneous Determination of Dopamine, Uric Acid, L-Tryptophan and Theophylline Based on a Carbon Nano-Onions Modified Electrode

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
  • معلومة اضافية
    • بيانات النشر:
      MDPI AG
    • الموضوع:
      2023
    • Collection:
      Directory of Open Access Journals: DOAJ Articles
    • نبذة مختصرة :
      In this work, carbon nano-onions (CNOs) with particle sizes of 5–10 nm were prepared by the multi-potential step method. High-resolution transmission electron microscopy, infrared spectroscopy and Raman spectroscopy characterize the effective synthesis of CNOs. CNOs/GCEs were prepared by depositing the prepared CNOs onto glassy carbon electrodes (GCEs) by a drop-coating method. Examination of the electrocatalytic activity of the CNOs/GCE sensor by simultaneously detecting dopamine (DA), uric acid (UA), L-tryptophan (Trp) and theophylline (TP) using a differential pulse voltammetry technique. The results showed that the linear ranges of DA, UA, Trp and TP were DA 0.01–38.16 μM, UA 0.06–68.16 μM, Trp 1.00–108.25 μM, and TP 8.16–108.25 μM, and the detection limits (S/N = 3) were 0.0039 μM, 0.0087 μM, 0.18 μM and 0.35 μM, respectively. The CNO S /GCE sensor had good stability and could be used for the detection of actual samples.
    • ISSN:
      2227-9717
    • Relation:
      https://www.mdpi.com/2227-9717/11/9/2547; https://doaj.org/toc/2227-9717; https://doaj.org/article/9c28b05fb2414b599e995a4955bd583f
    • الرقم المعرف:
      10.3390/pr11092547
    • الدخول الالكتروني :
      https://doi.org/10.3390/pr11092547
      https://doaj.org/article/9c28b05fb2414b599e995a4955bd583f
    • الرقم المعرف:
      edsbas.A429F0A7