The quantitative determination of hydrogen peroxide by voltammetry on the carbositall electrode

M. Blazheyevskiy, O. Mozgova

Abstract


The electrochemical behaviour of hydrogen peroxide (H2O2) has been studied using the alternating current voltammetry with square wave modulation in the potential range of +1.0…–1.0 V on the carbositall electrode as a working and auxiliary electrode (vs Ag,AgCl/KCl(sat)). The peak was obtained at Ep = +0.16 V on the background of 0.1 Mol L–1 Na2SO4 and 0.01 Mol L–1 KHSO4 (pH≈2.4) with its height rising proportionally to the increase of H2O2 concentrations. The linear dependence was observed in the H2O2 concentration range of (1.7-10.2)×10–5 Mol L–1, the calibration curve equation was Ip = (8.6±0.7)×103с (r = 0.998); LOD = 6.16×10–6 Mol L–1, LOQ = 2.05×10–5 Mol L–1. To determine H2O2 in solutions of antiseptic drugs the standard addition method was used.

Keywords


determination; hydrogen peroxide; voltammetry; carbositall rotation electrode; antiseptic (skin disinfectant)

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References


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DOI: https://doi.org/10.24959/93480

Abbreviated key title: Vìsn. farm.

ISSN 2415-8844 (Online), ISSN 1562-7241 (Print)