Frequency Dependence of Free Radical Formation by Ultrasound in the Presence of Different Rare Gases
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概要
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The frequency dependence of the hydroxyl radical yield produced by 47 kHz and 400 kHz ultrasound in the presence of rare gases was studied by electron paramagnetic resonance-spin trapping. 5,5-Dimethyl-1-pyrroline-N-oxide was used to detect hydroxyl radicals. Here, we show that the amount of hydroxyl radical yield produced by 400 kHz ultrasound was less inversely proportional to the thermal conductivity than those induced by 47 kHz ultrasound.
- 2001-05-30
著者
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Fukuda Shigekazu
Wakasa-wan Energy Research Center
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Kondo Takashi
Department Of Agricultural Chemistry The University Of Tokyo
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Ogawa Ryohei
Wakasa-wan Energy Research Center, 64-52-1 Nagatani, Tsuruga, Fukui 914-0192, Japan
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Fukuda Shigekazu
Wakasa-wan Energy Research Center, 64-52-1 Nagatani, Tsuruga, Fukui 914-0192, Japan
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