Impact of outdoor air on indoor airborne microbiome under hazy air pollution: A case study in winter Beijing
文献类型： 外文期刊
第一作者： Zhou, Feng
作者： Zhou, Feng;Niu, Mutong;Sun, Ye;Zhu, Tianle;Shen, Fangxia;Zheng, Yunhao;Wu, Yan
作者机构：
关键词： Indoor; Outdoor; Bioaerosol; Air pollution; Airborne microbiome
期刊名称：JOURNAL OF AEROSOL SCIENCE （ 影响因子：3.433； 五年影响因子：3.2 ）
ISSN： 0021-8502
年卷期： 2021 年 156 卷
页码：
收录情况： SCI
摘要： Exposure to indoor airborne microbiomes (bioaerosols) is closely associated with human health. However, knowledge regarding the characteristics of indoor bioaerosols in areas affected by serious ambient air pollution is still limited. In this study, indoor bioaerosols were characterized in winter Beijing via quantitative polymerase chain reaction (qPCR) and amplicon sequencing, and compared to outdoor bioaerosols. Concentrations of indoor bioaerosol were significantly lower than those of the adjacent outdoor bioaerosol, and were not significantly affected by outdoor air pollution. Community structures of indoor bioaerosol were distinct from those of outdoor environment, and were differentially affected by ambient air pollution. Specifically, significant change was observed in indoor fungal community impacted by hazy air pollution, while not in bacteria and archaea. Compared to outdoor air, indoor air was preferentially enriched with fungi (similar to 10%) in winter. Besides, about 40% of the bacteria indoors were likely contributed by outdoor bacteria. The results provide useful information regarding the impact of ambient air pollution on indoor bioaerosols, and furtherly highlight the distinction between indoor and outdoor bioaerosol assemblies.
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