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Croatica Chemica Acta, Vol. 91 No. 4, 2018.

Izvorni znanstveni članak

https://doi.org/10.5562/cca3423

Electrochemical and UV/VIS Study of L-Histidine and Its Complexes with Cobalt and Nickel

Martina Medvidović-Kosanović orcid id orcid.org/0000-0002-9887-9169 ; Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Anamarija Stanković orcid id orcid.org/0000-0001-5090-0435 ; Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Marija Jozanović orcid id orcid.org/0000-0002-9509-8105 ; Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Mateja Drulak ; Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
Marina Ilić ; Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia

Puni tekst: engleski pdf 5.319 Kb

str. 421-426

preuzimanja: 2.574

citiraj

Sažetak

In this work oxido-reduction properties of L-histidine were studied by cyclic and differential pulse voltammetry in a pH range from pH 4–10. The results have shown that L-histidine is not electroactive in a pH range from pH 4 to pH 9, while oxidation peak of L-histidine’s imidazole ring at pH 10 was detected with differential pulse voltammetry. It has been found that the oxidation peak current of L-histidine increased with the increase of its concentration in a solution. Adsorption of oxidation product of L-histidine on a glassy carbon electrode surface was also detected. Voltammetric techniques (cyclic and differential pulse voltammetry) and UV/VIS spectroscopy were used to study formation of L-histidine complexes with transition metals. It has been found that L-histidine formed octahedral complex with metal ion (Co2+ and Ni2+) in a 1 : 1 ratio.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

cyclic and differential pulse voltammetry; L-histidine; metal complexes

Hrčak ID:

216278

URI

https://hrcak.srce.hr/216278

Datum izdavanja:

30.12.2018.

Posjeta: 3.740 *