Effects of Aqueous Temperature on Sonolysis of Bisphenol A : Rate Constants Increasing with Temperature under Oxygen
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概要
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Sonolysis of bisphenol A (BPA), a representative endocrine disrupting chemical, has been studied at different temperatures ranging from 5 to 70°C in aqueous solutions under various gases at 489 kHz. The degradation rate constant increased significantly with temperature under O2 and air up to 50°C and 30°C, respectively. In this temperature range, the rate constants for O2 and air were significantly higher than those for Ar and N2, under which they hardly changed with temperature. The degradation rate constants decreased in the order O2 > air > Ar > N2. These results are in contrast with the thermal theory of sonochemistry. By adding tert-butanol as an OH radical scavenger, the degradation rate decreased significantly, revealing that OH radical reactions are responsible for the temperature effects on BPA sonolysis.
- 2009-07-01
著者
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UDDIN Md.
Department of Applied Physics and Chemistry, University of Electro-Communications
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HATANAKA Shin-ichi
Department of Applied Physics and Chemistry, University of Electro-Communications
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HAYASHI Shigeo
Department of Applied Physics and Chemistry, University of Electro-Communications
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Hatanaka Shin-ichi
Department Of Applied Physics And Chemistry The University Of Electro-communications
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Hatanaka Shin-ichi
Department Of Applied Physics And Chemistry University Of Electro-communications
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Uddin Md.
Department Of Applied Physics And Chemistry University Of Electro-communications
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Uddin Md.
Department Of Applied Chemistry Faculty Of Engineering Okayama University
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Hayashi Shigeo
Department Of Applied Physics And Chemistry University Of Electro-communications
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Hayashi Shigeo
Department Of Applied Physecs And Chemistry University Of Electro-communications
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