Darling E, Corsi R L
Department of Civil, Architectural and Environmental Engineering, Cockrell School of Engineering, The University of Texas at Austin, Austin, TX, USA.
Indoor Air. 2017 May;27(3):658-669. doi: 10.1111/ina.12345. Epub 2016 Nov 16.
Ozone reacts readily with many indoor materials, as well as with compounds in indoor air. These reactions lead to lower indoor than outdoor ozone concentrations when outdoor air is the major contributor to indoor ozone. However, the products of indoor ozone reactions may be irritating or harmful to building occupants. While active technologies exist to reduce indoor ozone concentrations (i.e, in-duct filtration using activated carbon), they can be cost-prohibitive for some and/or infeasible for dwellings that do not have heating, ventilating, and air-conditioning systems. In this study, the potential for passive reduction of indoor ozone by two different clay-based interior surface coatings was explored. These coatings were exposed to occupied residential indoor environments and tested bimonthly in environmental chambers for quantification of ozone reaction probabilities and reaction product emission rates over a 6-month period. Results indicate that clay-based coatings may be effective as passive removal materials, with relatively low by-product emission rates that decay rapidly within 2 months.
臭氧很容易与许多室内材料以及室内空气中的化合物发生反应。当室外空气是室内臭氧的主要来源时，这些反应会导致室内臭氧浓度低于室外。然而，室内臭氧反应的产物可能会对建筑物内的居住者产生刺激或危害。虽然存在一些主动技术来降低室内臭氧浓度（例如，使用活性炭的管道过滤），但对于某些人来说，这些技术成本过高，而且对于没有供暖、通风和空调系统的住宅来说可能不可行。在本研究中，探讨了两种不同的粘土基内表面涂层被动降低室内臭氧的潜力。这些涂层被暴露在有人居住的住宅室内环境中，并每两个月在环境舱中进行测试，以量化6个月期间的臭氧反应概率和反应产物排放率。结果表明，粘土基涂层作为被动去除材料可能是有效的，其副产物排放率相对较低，且在2个月内迅速下降。
