首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Effects of Temperature, Oxygen Level, Ionic Strength, and pH on the Reaction of Benzene with Hydroxyl Radicals at the Air-Water Interface in Comparison to the Bulk Aqueous Phase
【24h】

Effects of Temperature, Oxygen Level, Ionic Strength, and pH on the Reaction of Benzene with Hydroxyl Radicals at the Air-Water Interface in Comparison to the Bulk Aqueous Phase

机译:与本体水相相比,温度,氧气水平,离子强度和pH对苯与羟自由基在气-水界面反应的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Atmospheric aerosols (e.g., fog droplets) are complex, multiphase mediums. Depending on location, time of day, and/or air mass source, there can be considerable variability within these droplets, relating to temperature, pH, and ionic strength. Due to the droplets inherently small size, the reactions that occur within these droplets are determined by bulk aqueous phase and air-water interfacial conditions. In this study, the reaction of benzene and hydroxyl radicals is examined kinetically in a thin-film flow-tube reactor. By varying the aqueous volume (e.g., film thickness) along the length of the reactor, both bulk and interfacial reaction rates are measured from a single system. Temperature, pH, and ionic strength are varied to model conditions typical of fog events. Oxygen-poor conditions are measured to study oxygens overall effect on the reaction pathway. Initial rate activation energies and the bulk aqueous phase and interfacial contributions to the overall rate constant are also obtained.
机译:大气气溶胶(例如雾滴)是复杂的多相介质。取决于位置,一天中的时间和/或空气质量源,这些小滴内的温度,pH值和离子强度可能会有很大的差异。由于液滴固有的小尺寸,在这些液滴中发生的反应由本体水相和空气-水界面条件决定。在这项研究中,苯和羟基自由基的反应是在薄膜流管式反应器中进行动力学检查的。通过沿着反应器的长度改变水的体积(例如,膜的厚度),可以从单一系统中测量体积和界面反应速率。温度,pH和离子强度会发生变化,以模拟雾事件的典型条件。测量氧气不足的条件以研究氧气对反应途径的总体影响。还获得了初始速率活化能以及本体水相和界面对总速率常数的贡献。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号