Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy.
International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Qld, Australia.
Indoor Air. 2021 Jan;31(1):63-73. doi: 10.1111/ina.12713. Epub 2020 Jul 24.
The new particle formation due to the use of cleaning products containing volatile organic compounds (VOCs) in indoor environments is well documented in the scientific literature. Indeed, the physical-chemical process occurring in particle nucleation due to VOC-ozone reactions was deepened as well as the effect of the main influencing parameters (ie, temperature, ozone). Nonetheless, proper quantification of the emission under actual meteo-climatic conditions and ozone concentrations is not available. To this end, in the present paper the emission factors of newly generated ultrafine particles due to the use of different floor cleaning products under actual temperature and relative humidity conditions and ozone concentrations typical of the summer periods were evaluated. Tests in a chamber and in an actual indoor environment were performed measuring continuously particle number concentrations and size distributions during cleaning activities. The tests revealed that a significant particle emission in the nucleation mode was present for half of the products under investigation with emission factors up to 1.1 × 10 part./m (8.8 × 10 part./mL ), then leading to an overall particle emission comparable to other well-known indoor sources when cleaning wide surfaces.
在室内环境中使用含有挥发性有机化合物（VOCs）的清洁产品会导致新的颗粒物形成，这在科学文献中已有充分记载。实际上，由于 VOC-臭氧反应而导致的颗粒物成核过程中的物理化学过程以及主要影响参数（即温度、臭氧）的影响都得到了深入研究。然而，在实际的气象条件和臭氧浓度下，对排放进行适当的量化还不可用。为此，在本文中，评估了在实际温度和相对湿度条件下以及夏季典型的臭氧浓度下，使用不同地板清洁产品时，由于使用而产生的新生成超细颗粒的排放因子。在室内环境中进行了测试，在清洁活动期间连续测量了粒子数浓度和粒径分布。测试表明，在所研究的产品中有一半会出现大量的核模态颗粒排放，排放因子高达 1.1×10 个/立方米（8.8×10 个/毫升），然后当清洁大面积表面时，其整体颗粒排放与其他众所周知的室内源相当。
