Vallieres Morgan, Jones Stephanie H, Schwartz-Narbonne Heather, Donaldson D James
Department of Chemistry, University of Toronto, Toronto, Canada.
Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Canada.
Sci Rep. 2023 Oct 19;13(1):17835. doi: 10.1038/s41598-023-44927-5.
Surface chemistry plays an important role in the indoor environment owing to the large indoor surface to volume ratio. This study explores the photoreactivity of surfaces painted with a photoactive paint in the presence of NO. Two types of experiments are performed; illumination of painted surfaces with a nitrate deposit and illumination of painted surfaces in the presence of gaseous NO. For both types of experiments, illumination with a fluorescent bulb causes the greatest change in measured gaseous NO concentrations. Results show that relative humidity and paint composition play an important role in the photoreactivity of indoor painted surfaces. Painted surfaces could contribute to gas-phase oxidant concentrations indoors.
由于室内表面积与体积之比很大，表面化学在室内环境中起着重要作用。本研究探讨了在有一氧化氮（NO）存在的情况下，涂有光活性涂料的表面的光反应性。进行了两种类型的实验：用硝酸盐沉积物照射涂漆表面以及在气态NO存在下照射涂漆表面。对于这两种类型的实验，用荧光灯泡照射会导致测得的气态NO浓度发生最大变化。结果表明，相对湿度和涂料成分在室内涂漆表面的光反应性中起着重要作用。涂漆表面可能会导致室内气相氧化剂浓度升高。
