Diurnal Variations of Size-Resolved Bioaerosols During Autumn and Winter Over a Semi-Arid Megacity in Northwest China
文献类型：期刊论文
| 作者 | Yang, Liu1,2; Shen, Zhenxing1,2; Wang, Diwei1; Wei, Junqiang1; Wang, Xin3; Sun, Jian1; Xu, Hongmei1; Cao, Junji2 |
| 刊名 | GEOHEALTH
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 5期号:5页码:11 |
| 关键词 | bioaerosol diurnal variation inhalation size distribution |
| ISSN号 | 2471-1403 |
| DOI | 10.1029/2021GH000411 |
| 通讯作者 | Shen, Zhenxing(znhen@mail.xjtu.edu.cn) ; Wang, Xin(xin.wang@chbe.gatech.edu) |
| 英文摘要 | Bioaerosols have a major negative effect on air quality and on public health by causing the spread of diseases. This study evaluated the bioaerosol composition and variation in a semi-arid megacity of northwest China from October 2019 to January 2020 using an Andersen six-stage impactor sampler. The size distribution, diurnal variations of the concentrations of airborne bacteria, airborne fungi, and total airborne microbes (TAM) were investigated in autumn and winter. The mean concentrations of airborne bacteria, fungi, and TAM were 523.5 +/- 301.1 colony-forming units (CFU)/m(3), 1318.9 +/- 447.8 CFU/m(3), and (7.25 +/- 1.90) x 10(6) cells/m(3), respectively, in autumn and 581 +/- 305.4 CFU/m(3), 1234.4 +/- 519.9 CFU/m(3), and (5.96 +/- 1.65) x 10(6) cells/m(3), respectively, in winter. The mean bioaerosol concentrations were slightly higher on nonhaze days than on haze days, but the difference was not statistically significant. Higher ambient particulate matter levels and atmospheric oxidation capacity inhibited bacteria survival. The diurnal maximum bioaerosol concentration was observed in the morning in autumn, whereas in winter, bioaerosols did not exhibit such a distribution, the impact of human activities on bioaerosols was still uncertain. The size of airborne bacteria exhibited a bimodal distribution, whereas a unimodal pattern was observed for fungi and TAM. Most bacteria, fungi, and TAM were distributed in the respirable ranges from trachea and primary bronchi to alveoli, indicating that bioaerosols have a high risk of being inhaled and causing respiratory diseases in Xi'an. |
| WOS关键词 | PARTICULATE MATTER CONCENTRATIONS ; POLYCYCLIC AROMATIC-HYDROCARBONS ; TOTAL AIRBORNE MICROBES ; OUTDOOR ENVIRONMENTS ; SEASONAL-VARIATIONS ; VIABLE BIOAEROSOLS ; FUNGAL SPORES ; HAZE EPISODES ; PM2.5 ; AIR |
| 资助项目 | National Key R&D Program of China[2017YFC0212205] ; Natural Science Foundation of Shaanxi Province, China[2021JQ-027] ; National Natural Science Foundation of China[41877383] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1919] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| WOS记录号 | WOS:000654354800003 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Key R&D Program of China ; Natural Science Foundation of Shaanxi Province, China ; National Natural Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS |
| 源URL | [http://ir.ieecas.cn/handle/361006/16690]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 通讯作者 | Shen, Zhenxing; Wang, Xin |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian, Peoples R China 3.Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA |
| 推荐引用方式 GB/T 7714 | Yang, Liu,Shen, Zhenxing,Wang, Diwei,et al. Diurnal Variations of Size-Resolved Bioaerosols During Autumn and Winter Over a Semi-Arid Megacity in Northwest China[J]. GEOHEALTH,2021,5(5):11. |
| APA | Yang, Liu.,Shen, Zhenxing.,Wang, Diwei.,Wei, Junqiang.,Wang, Xin.,...&Cao, Junji.(2021).Diurnal Variations of Size-Resolved Bioaerosols During Autumn and Winter Over a Semi-Arid Megacity in Northwest China.GEOHEALTH,5(5),11. |
| MLA | Yang, Liu,et al."Diurnal Variations of Size-Resolved Bioaerosols During Autumn and Winter Over a Semi-Arid Megacity in Northwest China".GEOHEALTH 5.5(2021):11. |
入库方式： OAI收割
来源：地球环境研究所
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