Colorimetric detection of chloroperoxyl radical in reactive chlorine species solutions.

ABSTRACT: Chlorous acid water (CAW) is a chlorine-based disinfectant approved as a food additive in Japan. CAW is synthesized by the reaction of chloric acid aqueous solution with hydrogen peroxide under acidic conditions. However, in this synthesis method, various ions-such as Na+ from NaClO3 and the conjugate base of the acid used-remain in the solution, hindering the selective detection and decreasing stability of chloroperoxyl radical (ClOO•), a potential key disinfectant species. In this study, we aimed to establish a colorimetric quantification method for ClOO•. We prepared a high-purity ClOO• solution (ClO2_cx) by cation exchange and its purity and stability were evaluated using electron spin resonance (ESR) spectroscopy and total chlorine concentration measurements. Furthermore, several colo

SUBMITTER: Kawata H 

PROVIDER: S-EPMC12539726 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature