| OH自由基与溴乙烷反应动力学和大气中存留寿命 |
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| 引用本文： | 钟晋贤,张德强,牟玉静. OH自由基与溴乙烷反应动力学和大气中存留寿命[J]. 环境科学, 1997, 18(4): 39-31 |
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| 作者姓名： | 钟晋贤 张德强 牟玉静 |
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| 作者单位： | 中国科学院生态环境研究中心 |
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| 摘 要： | 溴代烷烃是破坏臭氧层的重要物质，用放电流动－共振荧光技术，测定ＯＨ自由基与Ｃ２Ｈ５Ｂｒ在２９７－３６９Ｋ温度范围的反应速率常数，求得其阿仑尼乌斯公式，并根据对流层的平均温度２２７Ｋ下求是ＯＨ自由基与溴乙烷反应速率常数（Ｋ）值，算出共在对流层的寿命为０．１６８ａ这将提供这类化合物使用否的重要科学根据。
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| 关 键 词： | OH自由基 反应动力学 寿命 溴乙烷 大气臭氧层 |
| 收稿时间： | 1996-11-11 |
Kinetics of Reaction of OH Radical with C2H2Br and the Residual Lifetime in the Atmosphere |
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| Zhong Jinxian,Zhang Deqiang. Kinetics of Reaction of OH Radical with C2H2Br and the Residual Lifetime in the Atmosphere[J]. Chinese Journal of Environmental Science, 1997, 18(4): 39-31 |
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| Authors: | Zhong Jinxian Zhang Deqiang |
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| Affiliation: | Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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| Abstract: | Brominated alkanes are a dest ructive substances for the ozone layer. The kinetics of reaction of OH radical with C2H2Br were studied. The reaction velocity rate constants were measured by the discharge flow-resonace fluo-rescence technique over the temperature range of 297-369K and the Arrenius equation was derived. The atmospheric lifetime of C2H2Br has been estimated to be 0.168 year due to the Arrenius equation at condition that the average temperature of atmospheric convection layer is 277K. |
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| Keywords: | hydroxylradical C2H2Br discharge flow resonance fluorescence at mospheric lifetime |
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