Ozone-initiated oxidation reactions on indoor surfaces meaningfully alter the chemical composition of indoor air and human exposure to air toxins. Ozone mass transport within the indoor surface boundary layer plays a key role in ozone-surface reaction kinetics. However, limited information is available on detailed ozone transport dynamics near realistic, irregular indoor surfaces. This paper presents a research framework to study the underlying mechanisms of ozone reactions with realistic indoor surfaces based on microscope scanning of surface material and detailed Computational Fluid Dynamics (CFD) simulation. The study results show that indoor surface topography can meaningfully affect ozone mass transport within a surface boundary layer, thereby modulating near-surface ozone concentration gradient and surface uptake. The results also reveal that the effective indoor surface area available for ozone reaction varies with indoor air speed and turbulent air mixing within the boundary layer. The detailed dynamic behaviors of ozone reactions with realistic indoor surfaces provide insights into the implications of pollutant–surface interactions on indoor chemistry and air quality.

中文翻译：

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了解室内表面边界层内的臭氧传输和沉积

室内表面上的臭氧引发的氧化反应有意义地改变了室内空气的化学成分和人体对空气毒素的暴露。室内表面边界层内的臭氧质量传输在臭氧-表面反应动力学中起关键作用。然而，关于现实的、不规则的室内表面附近的详细臭氧传输动态的信息有限。本文提出了一个研究框架，基于表面材料的显微镜扫描和详细的计算流体动力学 (CFD) 模拟，研究臭氧与真实室内表面反应的潜在机制。研究结果表明，室内地表地形可以显着影响地表边界层内的臭氧质量传输，从而调节近地表臭氧浓度梯度和地表吸收。结果还表明，可用于臭氧反应的有效室内表面积随室内空气速度和边界层内的湍流空气混合而变化。臭氧反应与真实室内表面的详细动态行为提供了深入了解污染物-表面相互作用对室内化学和空气质量的影响。