Author, as appears in the article.: Abate, Chiara; Piperno, Anna; Fragoso, Alex; Giuffre, Ottavia; Mazzaglia, Antonino; Scala, Angela; Foti, Claudia
Department: Enginyeria Química
URV's Author/s: Fragoso Sierra, Alex
Keywords: Chemical speciation program parameters metals ligands complexes acid
Abstract: A potentiometric study on the interactions of L-carnosine (CAR) (2-[(3-aminopropanoyl)amino]-3-(1H-imidazol-5-yl)propanoic acid) with two toxic metal cations, Hg2+ and Cd2+, is reported here. The elucidation of the metal (M2+)-CAR interactions in aqueous solution highlighted the speciation model for each system, the dependence of the formation constants of the complex species on ionic strength (0.15 ≤ I/mol L-1 ≤ 1) and temperature (288.15 ≤ T/K ≤ 310.15) and changes in enthalpy and entropy. The sequestering ability of CAR towards the two metal ions was quantified and compared with that with Pb2+, previously determined. Considering the complexing ability of CAR and its unclear electrochemical properties, a more electroactive derivative, the ferrocenyl-carnosine (FcCAR), was synthesized and its complexing ability was evaluated by UV-vis spectroscopy. FcCAR electrochemical properties were investigated by Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV) on Screen-Printed Electrodes (SPEs), to evaluate its sensing properties. Electrochemical responses in the presence of Hg2+ and Pb2+ have been shown to be promising for the electrochemical detection of these metal cations in aqueous environment.
Thematic Areas: Química Odontología Medicina ii Materiais Interdisciplinar Inorganic chemistry General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, inorganic & nuclear Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: alex.fragoso@urv.cat
Author identifier: 0000-0003-4839-6094
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://pubs.rsc.org/en/content/articlelanding/2023/dt/d2dt04093j
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Dalton Transactions. 52 (12): 3699-3708
APA: Abate, Chiara; Piperno, Anna; Fragoso, Alex; Giuffre, Ottavia; Mazzaglia, Antonino; Scala, Angela; Foti, Claudia (2023). Thermodynamic and voltammetric study on carnosine and ferrocenyl-carnosine. Dalton Transactions, 52(12), 3699-3708. DOI: 10.1039/d2dt04093j
Article's DOI: 10.1039/d2dt04093j
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications