Indoor/Outdoor airborne microbiome characteristics in residential areas across four seasons and its indoor purification

• DOI: 10.1016/j.envint.2024.108857
• Publication Date: 2024-06-28T23:13:52Z
• Authors: Yuying Chen; Zhishu Liang; Guiying Li; Taicheng An
• Keywords: Bioaerosol; Indoor bioaerosol; Cladosporium; Indoor air

Bioaerosols are more likely to accumulate in the residential environment, and long-term inhalation may lead a variety of diseases allergies. Here, we studied distribution, influencing factors diffusion characteristics indoor outdoor microbiota pollution six buildings Guangzhou, southern China over period one year. The results showed that particle sizes bioaerosol were mainly range inhalable size (<4.7 μm) with small difference among four seasons (74.61 % ± 2.17 %). microbial communities obvious seasonal differences high abundance summer, but no geographical differences. Among them, bacteria abundant than fungi. dominant microbes environments similar, Anoxybacillu, Brevibacillus Acinetobacter as bacteria, Cladosporium, Penicillium Alternaria airborne microbiomes sensitive temperature particulate matter (PM2.5, PM10) concentrations. Based on Sloan neutral model, prone random fungi, microbiome can be randomly distributed between two each season. Bioaerosol was from outdoor. health risk evaluation risks higher those air purifier had better removal efficiency 1.1–4.7 μm microorganisms, Gram-negative Gram-positive bacteria. This study is great significance for assessment control exposure.