[9a-E308-1~11] 8.1 Plasma production and diagnostics

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-E308-5] Quantitative evaluation of plasma-induced short-lived reactive oxygen species using aqueous dye solutions

〇Yuki Jonen¹, Hirofumi Kurita², Tatsuru Shirafuji¹, Jun-Seok Oh¹ (1.Osaka Metropol. Univ., 2.Toyohashi Univ. of Tech.)

Keywords:

atmospheric pressure plasma,short-lived reactive oxygen species,UV-vis spectrophotometry

Low-temperature atmospheric pressure plasma has promising medical applications; however, quantitative evaluation of short-lived reactive oxygen species (ROS) remains unclear. In this study, methylene blue (MB) and indigo carmine (IC) aqueous solutions, which decolorize upon reaction with short-lived ROS, were used to estimate the ROS supply from plasma based on changes in absorbance. We confirmed a strong correlation between ESR and MB measurements. In further investigation, we will evaluate short-lived ROS through comparison of MB and IC decomposition.