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Voltammetric measurement of H.sub.2./sub.O.sub.2./sub. concentration in aqua-organic solutions
 Kurc, L. ; Floriš, T. ; Josypčuk, Bohdan
In this work was tested the applicability of voltammetry and of meniscus silver solid amalgam electrode for determination H2O2 in presence of organic species (solvent, substrate or product of Baeyer-Villiger oxidation of cycloketones to lactones). Hydrogen peroxide can be measured in its wide concentration interval in different aqua-organic solutions. The slope of H.sub.2./sub.O.sub.2./sub. concentration dependence decreases with increasing 1,4-dioxane concentration. 1,4-dioxane in mixture with water can be used up to its concentration 80 vol. %. Model species, which represent reactants and products of Baeyer-Villiger oxidation, influence calibration dependence individually and their effect is not possible to estimate. Hence, quantitative hydrogen peroxide determination in probes of reactive mixture, which have different composition, should be carried out by standard addition method.
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1 Kurc, Lukáš
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