Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.
J Appl Microbiol. 2024 Apr 1;135(4). doi: 10.1093/jambio/lxae078.
Airborne transmission of diseases presents a serious threat to human health, so effective air disinfection technology to eliminate microorganisms in indoor air is very important. This study evaluated the effectiveness of a non-thermal plasma (NTP) air disinfector in both laboratory experiments and real environments.
An experimental chamber was artificially polluted with a bioaerosol containing bacteria or viruses. Additionally, classroom environments with and without people present were used in field tests. Airborne microbial and particle concentrations were quantified. A 3.0 log10 reduction in the initial load was achieved when a virus-containing aerosol was disinfected for 60 min and a bacteria-containing aerosol was disinfected for 90 min. In the field test, when no people were present in the room, NTP disinfection decreased the airborne microbial and particle concentrations (P < 0.05). When people were present in the room, their constant activity continuously contaminated the indoor air, but all airborne indicators decreased (P < 0.05) except for planktonic bacteria (P = 0.094).
NTP effectively inactivated microorganisms and particles in indoor air.
疾病的空气传播对人类健康构成严重威胁，因此，消除室内空气中微生物的有效空气消毒技术非常重要。本研究评估了非热等离子体（NTP）空气消毒器在实验室实验和真实环境中的效果。
实验室内用含有细菌或病毒的生物气溶胶进行人工污染。此外，在有和没有人的教室环境中进行现场测试。量化了空气中微生物和颗粒的浓度。当含有病毒的气溶胶消毒 60 分钟，含有细菌的气溶胶消毒 90 分钟时，初始负荷减少了 3.0 log10。在现场测试中，当房间内没有人时，NTP 消毒降低了空气中微生物和颗粒的浓度（P<0.05）。当房间内有人时，他们的持续活动不断污染室内空气，但除浮游细菌外（P=0.094），所有空气传播指标均下降（P<0.05）。
NTP 有效地灭活了室内空气中的微生物和颗粒。
