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

Autori
Medvidović-Kosanović, Martina ; Stanković, Anamarija ; Jozanović, Marija ; Drulak, Mateja ; Ilić, Marina

Izvornik
Croatica chemica acta (0011-1643) 91 (2018), 4; 421-426

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cyclic and differential pulse voltammetry, L-histidine, metal complexes

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.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA