| OH自由基与溴乙烷反应动力学和大气中存留寿命 |
| 摘要点击 1660 全文点击 2274 投稿时间：1996-11-11 |
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| 中文关键词 OH自由基 C2H5Br 反应动力学 放电流动共振荧光 存留寿命 |
| 英文关键词 hydroxylradical C2H2Br discharge flow resonance fluorescence at mospheric lifetime |
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| 中文摘要 |
| 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温度范围内的反应速率常数,求得其阿仑尼乌斯公式。并根据对流层的平均温度227K下求得OH自由基与溴乙烷反应速率常数(K)值,算出其在对流层的寿命为0.168a,这将提供这类化合物使用否的重要科学根据。 |
| 英文摘要 |
| 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. |
