Indoor Lighting Releases Gas Phase Nitrogen Oxides from Indoor Painted Surfaces,Environmental Science & Technology Letters

当前位置： X-MOL 学术 › Environ. Sci. Technol. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Indoor Lighting Releases Gas Phase Nitrogen Oxides from Indoor Painted Surfaces
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2019-01-22 , DOI: 10.1021/acs.estlett.8b00685
Heather Schwartz-Narbonne ₁ , Stephanie H. Jones ₁ , D. James Donaldson _{1,

2}

Affiliation

The indoor environment provides unique surfaces and lighting conditions which affect the photochemistry taking place there. As indoor illumination sources typically output wavelengths too long to affect gas phase photochemistry, the potential for surface photochemistry induced by indoor light sources has been mostly unexplored. In this proof of concept study, we report the emission of gas phase nitrogen oxides as a product of the illumination of glass surfaces coated with nitrate-doped TiO₂ and nitratedeposited on indoor paint, using a variety of common indoor light sources. Fluorescent, incandescent, halogen, and LED lights were studied, and a xenon lamp was used for baseline measurements. NO_x was emitted from all samples, thus establishing that renoxification can occur in indoor environments. NO₂ (g) was the predominant species emitted from samples coated with nitrate-doped TiO₂, and NO (g) was the predominant species emitted from nitrate-deposited painted glass surfaces. It was also found that heating from the light sources had no effect on the production of NO_x. This preliminary study establishes the potential for heterogeneous photochemistry to occur on real indoor surfaces and opens the way for further research to be conducted under realistic indoor conditions.

中文翻译：

室内照明从室内涂漆表面释放出气相氮氧化物

室内环境提供了独特的表面和光照条件，影响了那里发生的光化学反应。由于室内照明光源通常输出的波长太长而无法影响气相光化学反应，因此室内光源引起的表面光化学反应的潜力一直未得到开发。在此概念验证研究中，我们报告了使用多种常见的室内光源，气相氮氧化物的排放，这些气相氮氧化物是对涂覆有硝酸盐掺杂的TiO ₂并沉积在室内涂料中的硝酸盐的玻璃表面进行照明的产物。研究了荧光灯，白炽灯，卤素灯和LED灯，并使用氙气灯进行基线测量。NO _X从所有样品中都排放出，因此证明了在室内环境中可能发生再氧化。NO ₂（g）是从硝酸盐掺杂的TiO ₂涂层样品中释放的主要物质，而NO（g）是从硝酸盐沉积的喷漆玻璃表面释放的主要物质。还发现，来自光源的加热对NO _x的产生没有影响。这项初步研究确定了在实际室内表面上发生异质光化学的可能性，并为在现实室内条件下进行进一步研究开辟了道路。

更新日期：2019-02-07

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11