著者

刈谷 未来 山脇 直也 奥村 勇人 赤松 重則 西内 悠祐 秦 隆志

出版者

日本ソノケミストリー学会

雑誌

ソノケミストリー討論会講演論文集 27 (ISSN:24241512)

巻号頁・発行日

pp.47-48, 2018-11-19 (Released:2022-09-20)

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In this study, for the evaluation of ultrafine bubbles (UFB) which is important in fine bubble research, a method to use hydroxyl (OH) radicals or luminescence phenomenon (sonoluminescence) generated by the collapse of UFB when applying ultrasonic wave to UFB as an indicator was verified. Electron spin resonance method and potassium iodide (KI) method were used for the evaluation of OH radicals, and photomultiplier tubes were used for the evaluation by sonoluminescence. OH radicals by the collapse of UFB were observed from the result of OH radical measurement by ESR. And, even in the KI method which is a simple OH radical evaluation, it was shown that the same evaluation can be made from the difference in absorbance when ozone is used for the inclusion gas. On the other hand, in the sonoluminescence measurement, it was confirmed that the luminescence intensity in water to which inorganic particles of the same amount as that of UFB was added was smaller than in the case of UFB water.