Abstract
This paper describes the determination of Pb and Cu with a Nafion-modified glassy carbon electrode and MnCo2O4 nanoparticles as working electrode for anodic stripping voltammetry. Pb and Cu were accumulated in HCl/KCl (0.1 mol dm–3) at a potential of–1.4 V (vs. Ag/AgCl electrode) for 480 s, followed by a linear sweep anodic stripping voltammetry (ASV) scan from–1.0 to +0.5 V. Under optimum conditions, the calibration curves were linear in the range of 0.01–8 and 0.01–5 mg dm–3 for Pb and Cu, respectively. Effect of sample dilution, accumulation time and potential were optimized. A study of interfering substances was performed. A significant increase in current was obtained at the modified electrode in comparison with the bare glassy carbon electrode. The modified electrode was successfully applied for determination of Pb and Cu in wine samples after a simple preparation procedure. Pb and Cu content in wine was used for estimation of the target hazard quotient (THQ) values for minimal and maximal levels of the metals.
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This work was performed within the framework supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia. Contract number: 451- 03-68/2020-14/200168.
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Antunović, V., Tripković, T., Tomašević, B. et al. Voltammetric Determination of Lead and Copper in Wine by Modified Glassy Carbon Electrode. ANAL. SCI. 37, 353–358 (2021). https://doi.org/10.2116/analsci.20P302
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DOI: https://doi.org/10.2116/analsci.20P302