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首页> 外文会议>Indoor Air 2005 >EXTREME HETEROGENEOUS OXIDATION CHEMISTRY (EHOC): REACTION KINETICS AND PRODUCT FORMATION
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EXTREME HETEROGENEOUS OXIDATION CHEMISTRY (EHOC): REACTION KINETICS AND PRODUCT FORMATION

机译：极端异质氧化化学（EHOC）：反应动力学和产物形成

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There is scant information on heterogeneous chemistry at high O3 concentrations, what we refer to as extreme heterogeneous oxidation chemistry (EHOC) events. EHOC events include the disinfection of a building for mold or other bio-contaminants, and have become a common practice in hot and humid climates in the United States.However, the consequences of such practices, especially the by-products formed, remain largely unexplored. In the present study, twenty-four materials were exposed to O3 concentrations from 125 to 2,200 ppm. Reaction probabilities were highly transient, decreasing rapidly with time due to passivation of reaction sites on materials.By-product formation also varied with time and material. For many materials, the by-product concentrations sharply increased after O3 exposure, and emissions of the less volatile products persisted until the end of the monitoring period.
机译：在高O3浓度下，关于异相化学的信息很少，我们称之为极端异质氧化化学（EHOC）事件。 EHOC事件包括对建筑物进行消毒以防霉菌或其他生物污染物，这在美国炎热潮湿的气候中已成为一种普遍做法，但这种做法的后果，尤其是所形成的副产物，在很大程度上尚待探索。在本研究中，二十四种材料暴露于125至2,200 ppm的O3浓度。反应概率是高度瞬态的，由于材料上反应位点的钝化而随时间迅速降低，副产物的形成也随时间和材料而变化。对于许多材料而言，暴露于O3后，副产物的浓度急剧增加，挥发性较低的产物的排放一直持续到监测期结束。

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