Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India.
Environ Sci Pollut Res Int. 2019 Jun;26(18):18191-18199. doi: 10.1007/s11356-019-05118-w. Epub 2019 Apr 29.
Indoor air pollution affects human health via acute and chronic exposure. Traditionally, filter systems have been used for indoor air cleaning; however, issues like filter life and routine maintenance remain associated with their operation. Ionizers are emerging as a potential candidate for indoor air cleaning. A major part of previous studies intended to "project ionizers as air cleaners" focus on particle removal in different conditions. But indices representing charge effects have not been given due attention. This study focuses on the measurement of spatial profile of ion concentration and aerosol current around a single ionizer and a circular array of five ionizers. The distribution of ion concentration around the system/array was found to be isotropic in the absence of ventilation. Aerosol current values under ionizer action have been measured for the first time. Results obtained from this work could be instrumental for the design of future ionizer systems with improved efficacy.
室内空气污染通过急性和慢性暴露影响人类健康。传统上，过滤系统已被用于室内空气清洁；然而，其运行仍然存在诸如过滤器寿命和常规维护等问题。离子发生器作为室内空气清洁的潜在候选者正在出现。之前的研究大部分旨在“将离子发生器作为空气净化器来预测”，重点是在不同条件下去除颗粒。但是，代表电荷效应的指数并没有得到应有的重视。本研究专注于测量单个离子发生器和五个离子发生器组成的圆形阵列周围的离子浓度和气溶胶电流的空间分布。在没有通风的情况下，发现系统/阵列周围的离子浓度分布是各向同性的。首次测量了离子发生器作用下的气溶胶电流值。这项工作的结果可能对设计具有更高功效的未来离子发生器系统具有重要意义。
