Electrochemical Detection of Paracetamol and Iohexol Using a Boron-Doped Diamond Anode Modified with Gold Particles
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2023-08-28 |
| Journal | American Journal of Applied Chemistry |
| Authors | Koffi Konan Sylvestre, KambirĂ© Ollo, Gnamba Corneil Quand-MĂȘme, Kimou Kouakou Jocelin, Mohamed BertĂ© |
| Institutions | Université Félix Houphouët-Boigny |
| Citations | 1 |
Abstract
Section titled âAbstractâPersistent organic pollutants such as pharmaceuticals (iohexol and paracetamol) released into the environment is an environmental problem. Thus our objective is to propose an effective and less expensive method for the determination of their concentrations in the environment. In this work the detection and quantification of pharmaceuticals (iohexol and paracetamol) were performed using cyclic voltammetry and differential pulse voltammetry (DPV). The anode used is a boron-doped diamond electrode (BDD) modified with gold particles (Au-BDD). The characterization of the Au-BDD electrode surface by scanning electron microscopy coupled to energy dispersive spectroscopy and by the electrochemical method (cyclic voltammetry) showed the presence of gold particles uniformly distributed on the anode surface. DPV method allowed to obtain two calibration curves for iohexol and paracetamol concentrations ranging respectively from 4 ”M to 67.42 ”M and from 0.8 ”M to 22.943 ”M. The limits of detection are respectively 1.13 ”M and 0.045 ”M for iohexol and paracetamol. These results show that the presence of gold particles on the anode surface improved the detection of paracetamol. These pharmaceuticals were detected in an ionic environment and it was noted that the interference phenomenon was very negligible during the detection of these two pharmaceuticals. This shows that our anode can be used to determine PCM and IHX concentrations in highly charged media.