Aytekin Dila Aydın, Tetik Nurten, Şahin Ülkü Alver, Ayvaz Coşkun, Nurtop Elif, Vatansever Cansel, Can Füsun
Environmental Engineering Department, Engineering Faculty, Istanbul University-Cerrahpaşa, Istanbul, Türkiye.
Food Engineering, Faculty of Chemistry and Metallurgy, Yıldız Technical University, Istanbul, Türkiye.
Environ Sci Pollut Res Int. 2025 Apr;32(20):12360-12371. doi: 10.1007/s11356-025-36441-0. Epub 2025 Apr 29.
Although there is an increasing interest after the COVID-19 pandemic, electronic ionization efficiency and impact on indoor air quality are not yet fully understood, and studies are insufficient. Therefore, in this study, the disinfection efficiency for viruses and bacteria and the change of indoor thermal comfort parameters (temperature, humidity, pressure) and air pollutants (CO, NO, VOC, O, CHO, PM, Particle Number (PN) from 0.3 to 10 µm particle sizes) by a portable indoor air cleaner using the needle point bipolar ionization (NPBI) method were investigated. The highest antibacterial activity was achieved at hour 3 with a 99.8% reduction for Bacillus subtilis, 99.8% for Staphylococcus aureus, 98.8% for Escherichia coli, and 99.4% for Staphylococcus albus, and sustained at hour 4th. The ions had antiviral activity on surfaces with a 94% TCID50 reduction of the HCoV-229E virus after 2 h of NPBI-on. No significant changes were detected in thermal comfort parameters, NO, and VOC during the NPBI-on. Moreover, it was found that O and CHO were not generated when the NPBI system was operated in the room for 4 h. Consequently, an average particle number removal rate of 60% can be achieved with the NPBI system in much less time than with the natural decay time.
尽管在新冠疫情之后人们对其兴趣日益增加，但电子电离效率及其对室内空气质量的影响尚未完全了解，相关研究也不足。因此，在本研究中，对使用针尖双极电离（NPBI）方法的便携式室内空气净化器对病毒和细菌的消毒效率以及室内热舒适参数（温度、湿度、压力）和空气污染物（一氧化碳、一氧化氮、挥发性有机化合物、臭氧、醛类、颗粒物，粒径从0.3到10微米的颗粒数）的变化进行了研究。在第3小时达到最高抗菌活性，枯草芽孢杆菌减少99.8%，金黄色葡萄球菌减少99.8%，大肠杆菌减少98.8%，白色葡萄球菌减少99.4%，并在第4小时保持。离子在表面具有抗病毒活性，NPBI开启2小时后，HCoV - 229E病毒的半数组织培养感染剂量（TCID50）降低了94%。在NPBI开启期间，热舒适参数、一氧化氮和挥发性有机化合物未检测到显著变化。此外，发现NPBI系统在室内运行4小时时不会产生臭氧和醛类。因此，与自然衰减时间相比，NPBI系统能在更短的时间内实现平均60%的颗粒数去除率。
