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Electron Spin Resonance Analyse on the Production of Hydroxyl Radicals by Ozone Photolysis
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作者 高利利 程金平 +3 位作者 刘元嫄 殷永文 OKETA Takemi horibata fumie 《Journal of Shanghai Jiaotong university(Science)》 EI 2010年第4期458-462,共5页
In order to explore the production of hydroxyl radical (.OH) in a confined space, a novel ozone-light irradiation system is constructed in this study, and the .OH radical is measured by spin-trapping electron spin r... In order to explore the production of hydroxyl radical (.OH) in a confined space, a novel ozone-light irradiation system is constructed in this study, and the .OH radical is measured by spin-trapping electron spin resonance (ESR) method in which 5,5-dimethyl-l-pyrroline-N-oxide (DMPO) is selected as the spin-trap. Several influence factors including the light intensity, the irradiation time and DMPO mass concentration are discussed. The results show that in this experimental system, with DMPO mass concentration of lg/L and the irradiation time of 30 rain, the -OH radical can be best captured. Besides, both wavelength and intensity of the irradiation light could effect the generation of .OH radical. These results are of great importance to further study the sterilization effect of .OH radical in confined space. 展开更多
关键词 electron spin resonance(ESR) hydroxyl radicals OZONE PHOTOLYSIS
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