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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Reactivity of 2-ethyl-1-hexanol in the atmosphere
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Reactivity of 2-ethyl-1-hexanol in the atmosphere

机译:2-乙基-1-己醇在大气中的反应性

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摘要

Rate coefficients at room temperature for the reaction of 2-ethyl-1-hexanol with OH and NO3 radicals and with Cl atoms have been determined in a 150 L PTFE chamber using GC-FID/ SPME and FTIR as detection systems. The rate coefficients k (in units of cm~3 molecule~(-1) s~(-1)) obtained were: (1.13 ± 0.31) 10~(-11) for the OH reaction, (2.93 ± 0.92) 10~(-15) for the NO3 reaction and (1.88 ± 0.25) 10~(-10) for the Cl reaction. Despite the high concentrations of 2-ethyl-1-hexanol, especially in indoor air, this is the first kinetic study carried out to date for these reactions. The results are consistent with the expected reactivity given the chemical structure of 2-ethyl-1-hexanol. Calculated atmospheric lifetimes reveal that the dominant loss process for 2-ethyl-1-hexanol is clearly the daytime reaction with the hydroxyl radical.
机译:使用GC-FID / SPME和FTIR作为检测系统,已在150 L PTFE室中确定了2-乙基-1-己醇与OH和NO3自由基以及与Cl原子反应的室温速率系数。获得的速率系数k(以cm〜3分子〜(-1)s〜(-1)为单位):(1.13±0.31)10〜(-11)(OH反应),(2.93±0.92)10〜 (-15)用于NO3反应,(1.88±0.25)10〜(-10)用于Cl反应。尽管2-乙基-1-己醇的浓度很高,尤其是在室内空气中,但这是迄今为止针对这些反应进行的首次动力学研究。给定2-乙基-1-己醇的化学结构,结果与预期的反应性相符。计算得出的大气寿命表明,2-乙基-1-己醇的主要损失过程显然是白天与羟基自由基的反应。

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