Abstract
The aim of our work was an implementation of potentiometric determination of copper in samples of the genus Veronica (family Plantaginaceae). Genus Veronica herbs are widely used in e.g. cosmetic, traditional medicine and food industry. The copper content was potentiometrically analysed in 25 herbal samples of genus Veronica and 12 of their hydrolats. The analysed samples were herbal samples of Veronicas harvested mainly in three Croatian regions – Dalmatia, Lika and Slavonia as well as randomly selected samples of theirs hydrolats. Veronicas’ samples were digested in a microwave oven by using nitric acid and hydrogen peroxide mixture. The potentiometric determination was performed by using commercially available CuISE for Cu2+, by using potentiometric methods previously developed in our laboratory.
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