| 水溶液中臭氧和溴离子的反应研究 |
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| 引用本文： | 俞潇婷,张家辉,潘循皙,张仁熙,侯惠奇.水溶液中臭氧和溴离子的反应研究[J].环境科学,2012,33(9):3139-3143. |
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| 作者姓名： | 俞潇婷 张家辉 潘循皙 张仁熙 侯惠奇 |
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| 作者单位： | 复旦大学环境科学研究所, 上海 200433;复旦大学环境科学研究所, 上海 200433;复旦大学环境科学研究所, 上海 200433;复旦大学环境科学研究所, 上海 200433;复旦大学环境科学研究所, 上海 200433 |
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| 基金项目： | 国家自然科学基金大科学装置联合基金项目(10979020) |
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| 摘 要： | 为探明O3氧化Br-的反应机制,采用离子色谱、PDA紫外-可见光度仪研究了水中Br-被O3氧化的反应过程.离子色谱分析表明,被氧化的Br-中只有约10%被O3氧化成BrO3-.进一步研究表明,除了生成BrO3-外,Br-被O3氧化过程中还产生了Br2,Br2又与溶液中存在的Br-结合形成Br3-,并首次得到了Br3-的吸收光谱,测得Br3-的最大吸收峰λmax为260 nm,提出了Br-与O3的基元反应.该研究补充和完善了O3氧化Br-的反应机制,也为O3处理含Br-水时Br-的归趋提供了有益信息.
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| 关 键 词： | 臭氧 氧化 溴离子 溴酸根 反应机制 |
| 收稿时间： | 2011/11/11 0:00:00 |
| 修稿时间： | 2012/1/16 0:00:00 |
Investigation of the Oxidation Reaction of O3 with Bromide Ion in Aqueous Solution |
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| YU Xiao-ting,ZHANG Jia-hui,PAN Xun-xi,ZHANG Ren-xi and HOU Hui-qi.Investigation of the Oxidation Reaction of O3 with Bromide Ion in Aqueous Solution[J].Chinese Journal of Environmental Science,2012,33(9):3139-3143. |
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| Authors: | YU Xiao-ting ZHANG Jia-hui PAN Xun-xi ZHANG Ren-xi and HOU Hui-qi |
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| Institution: | Environmental Science Institute, Fudan University, Shanghai 200433, China;Environmental Science Institute, Fudan University, Shanghai 200433, China;Environmental Science Institute, Fudan University, Shanghai 200433, China;Environmental Science Institute, Fudan University, Shanghai 200433, China;Environmental Science Institute, Fudan University, Shanghai 200433, China |
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| Abstract: | The reaction mechanism of O3 with bromide ion in aqueous solution was studied by ion chromatography and UV-Vis spectrometry instruments. Ion chromatography analysis showed that only 10% of Br- which was oxidized by ozone was formed into bromate ion. The results demonstrated that the final products of the oxidation reaction were identified as Br2 and Br3- except for BrO3-. The formation of Br3- which was yielded from the reaction of Br2 with Br- was the major process in the reaction of Br- attacked by O3. The characteristic absorption spectrum of Br3- with an absorption peak at 260 nm was also investigated. The results may provide helpful information about the mechanism of the oxidation reaction of Br- with O3 and fate of Br- or its derivatives in the environment by the oxidation processes. |
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| Keywords: | ozone oxidation bromide bromate reaction mechanism |
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