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.
Highlights
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/KСl(sat))
H2O2 is widely used in various industrial processes, such as the textile and paper industries for bleaching materials [20], and promotes controlled fibre swelling [22]
The aim of the present work is to determine the feasibility of the H2O2 quantitative determination in a standard pharmacopoeian solution and preparations by cathodic voltammetry using the carbositall rotation electrode (CE) as an indicating electrode
Summary
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/KСl(sat)). To determine H2O2 in solutions of antiseptic drugs the standard addition method was used. For the overall assessment of the residual toxicity of the treated water it is necessary to consider the content of H2O2 since such an assessment is carried out by biological organisms, which are quite sensitive to it and, should continuously monitor its concentration in the aquatic environment [8, 14, 18, 28]. H2O2 is used most widely in medicine and pharmacy as an active ingredient of many antiseptics and disinfectants (the pharmacotherapeutic group: Antiseptics and disinfectants; ATC code D08А Х01), such as 3%, 6% solutions for external use, Hydroperite, Grillen, Peramine, PEMOS-1, Perkat.
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