Geng Xueyun, Nie Changliang, Wang Lina, Li Ling, Li Dan, Nishino Atsushi, Chen Jianmin
Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP, Department of Environmental Science & Engineering, Fudan Tyndall Centre, Institute of Atmospheric Sciences, Fudan University, Shanghai 200438, China.
IAQ Technologies Group, Technology and Innovation Center, Daikin Industries, LTD. Osaka 566-8585, Japan.
Environ Health (Wash). 2023 Dec 27;2(1):34-41. doi: 10.1021/envhealth.3c00145. eCollection 2024 Jan 19.
Air conditioning is a crucial participant in indoor air circulation and harmful microorganism transmission. To elucidate microbial contamination in air conditioning systems, bacteria, fungi, and pollens in residential air conditioning (AC) filters in Shanghai were revealed. The concentrations of fungal ITS (1,972,037 ± 5,025,505 copies/cm) in most filter samples were considerably higher than the 16S rRNA gene (21,587 ± 21,461 copies/cm). The multitudinous bacteria determined a higher richness, whereas the trend was not in line with fungi, owing to flourishing, with an average of 43.75%. Numerous bacteria that may often be prevalent in human skin, mucous membranes, and intestines, such as , , , , and , were also discovered in AC filters. The pollens were affiliated with Streptophyta at phylum, and was the most abundant genus (mean value 67.84%), raising the possibility of allergic responses. This study provides a better understanding of the microbial characteristics of AC filters, enables more rational approaches for microbe contaminant control, and ultimately improves human health in megacities.
空调是室内空气流通和有害微生物传播的关键参与者。为了阐明空调系统中的微生物污染情况，对上海家用空调（AC）过滤器中的细菌、真菌和花粉进行了检测。大多数过滤器样本中真菌ITS的浓度（1,972,037 ± 5,025,505拷贝/平方厘米）显著高于16S rRNA基因（21,587 ± 21,461拷贝/平方厘米）。大量细菌显示出更高的丰富度，然而真菌的情况并非如此，真菌丰富度平均为43.75%。在空调过滤器中还发现了许多通常在人体皮肤、粘膜和肠道中普遍存在的细菌，如、、、和。花粉在门水平上隶属于链形植物门，其中是最丰富的属（平均值67.84%），这增加了过敏反应的可能性。本研究有助于更好地了解空调过滤器的微生物特征，为微生物污染物控制提供更合理的方法，并最终改善大城市中的人类健康。
