Britigan Nicole, Alshawa Ahmad, Nizkorodov Sergey A
Department of Chemistry, University of California, Irvine 92697, USA.
J Air Waste Manag Assoc. 2006 May;56(5):601-10. doi: 10.1080/10473289.2006.10464467.
Indoor air purifiers are advertised as safe household products for health-conscious individuals, especially for those suffering from allergies and asthma. However, certain air purifiers produce ozone (O3) during operation, either intentionally or as a byproduct of air ionization. This is a serious concern, because O3 is a criteria air pollutant regulated by health-related federal and state standards. Several types of air purifiers were tested for their ability to produce ozone in various indoor environments at 40-50% relative humidity, including office rooms, bathrooms, bedrooms, and cars. O3 levels generated by personal wearable air purifiers were also tested. In many cases, O3 concentrations were well in excess of public and/or industrial safety levels established by U.S. Environmental Protection Agency, California Air Resources Board, and Occupational Safety and Health Administration. Simple kinetic equations were obtained that can predict the steady-state level of O3 in a room from the O3 emission rate of the air purifier and the first-order decay rate of O3 in the room. The additivity of O3 levels generated by independent O3 generators was experimentally demonstrated.
室内空气净化器被宣传为注重健康人士的安全家用产品，尤其是对那些患有过敏和哮喘的人。然而，某些空气净化器在运行过程中会产生臭氧（O3），这要么是有意为之，要么是空气电离的副产品。这是一个严重的问题，因为O3是一种受联邦和州健康相关标准监管的标准空气污染物。测试了几种类型的空气净化器在相对湿度为40 - 50%的各种室内环境中产生臭氧的能力，这些环境包括办公室、浴室、卧室和汽车。还测试了个人可穿戴空气净化器产生的O3水平。在许多情况下，O3浓度远远超过了美国环境保护局、加利福尼亚空气资源委员会和职业安全与健康管理局制定的公共和/或工业安全水平。得到了简单的动力学方程，这些方程可以根据空气净化器的O3排放速率和房间内O3的一级衰减速率来预测房间内O3的稳态水平。通过实验证明了独立O3发生器产生的O3水平具有可加性。
