Electrochemical Determination of Hg2+ on a Poly (Eriochrome Blue Black R) Modified Carbon Paste Electrode - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue International Research Journal of Pure and Applied Chemistry Année : 2023

Electrochemical Determination of Hg2+ on a Poly (Eriochrome Blue Black R) Modified Carbon Paste Electrode

Résumé

In this work a new, simple, fast, and efficient electrochemical approach for the determination of inorganic mercury (Hg2+) using the differential pulse anodic stripping voltammetry (DPASV) technique was presented. This is achieved by modifying the surface of a carbon paste electrode by electropolymerization of Eriochrome blue black R. First, the behavior of Hg2+ on the modified electrode is studied by cyclic voltammetry and electrochemical impedance spectroscopy, to evaluate performance and understand the phenomena that take place on its surface. DPASV is then used to optimize the sensor in HClO4 medium. After optimization, a linear calibration graph was obtained in the concentration range of 1x10-9 to 9x10-9 mol.L-1 with correlation coefficient R2= 0.9975%, the limit of detection (LOD) and the limit of quantification (LOQ) obtained are respectively 3.23x10-10 mol.L-1 and 1.07x10-9 mol.L-1. The relative standard deviation (RSD) for 7 measurements is 3.07%, which proves that this sensor is reproducible. Finally, this method has been successfully applied in real samples of water and the results obtained are satisfactory because the recovery rates of Hg2+ vary from 99.2 to 100.1%.
Fichier principal
Vignette du fichier
Mahamane2412023IRJPAC96835.pdf (879.18 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04262805 , version 1 (27-10-2023)

Licence

Paternité

Identifiants

Citer

Abdoulkadri Ayouba Mahamane, Abdoulaye Idrissa Kalidou, Hassane Adamou, Bachir Mijitaba Sahirou, Alain Walcarius, et al.. Electrochemical Determination of Hg2+ on a Poly (Eriochrome Blue Black R) Modified Carbon Paste Electrode. International Research Journal of Pure and Applied Chemistry, 2023, 24 (1), pp.49-64. ⟨10.9734/irjpac/2023/v24i1801⟩. ⟨hal-04262805⟩
21 Consultations
33 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More