F. Tampieri et al. Quantification of Plasma-Produced Hydroxyl Radicals in Solution and their Dependence on the pH. Anal. Chem.

F. Tampieri, M.P. Ginebra, C. Canal. Quantification of Plasma-Produced Hydroxyl Radicals in Solution and their Dependence on the pH. Anal. Chem., 2021.

doi: 10.1021/acs.analchem.0c04906

Abstract

HO radicals are the most important reactive species generated during water treatment by non-thermal plasma devices. In this letter, we report the first quantification of the steady-state concentration and lifetime of plasma-produced hydroxyl radicals in water solutions at pH 3 and 7, and we discuss the differences based on their reactivity with other plasma-generated species. Finally, we show to what extent the use of chemical probes to quantify short-lived reactive species has an influence on the results and that it should be taken into account.