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

Croatica Chemica Acta

Medvidović-Kosanović, Martina^1¹ 

[1] Department of Chemistry, J. J. Strossmayer University of Osijek, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia^1

关键词: cyclic and differential pulse voltammetry;    L-histidine;    metal complexes;   

DOI  :  10.5562/cca3423

学科分类：化学（综合）

来源: Croatica Chemica Acta

【 摘 要 】

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 .

【 授权许可】

CC BY