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文章题目：青岛市不同下垫面微生物气溶胶分布特征
英文名称：Studies on Microbial Aerosol of Different Underlying Surfaces in Qingdao
发表期刊：环境科学研究
卷期：2013,26（10）

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Accession number:

20135217143869

Title:

Studies on microbial aerosol of different underlying surfaces in Qingdao City

Authors:

Qian, Sheng-Cai1 ; Song, Zhi-Wen1 ; Wu, Deng-Deng1; Ge, Jian-Hua2; Zheng, Yuan1; Xia, Yan1

Author affiliation:

1School of Environmental and Municipal Engineering, Qingdao Technological University, Qingdao 266033, China

2Management Office of Jihongtan Reservoir, The Project of Water Diversion from Yellow River to Qingdao, Qingdao 266111, China

Corresponding author:

Song, Z.-W. (songzhiwen@qtech.edu.cn)

Source title:

Research of Environmental Sciences

Abbreviated source title:

Res. Environ. Sci.

Volume:

26

Issue:

10

Issue date:

2013

Publication year:

2013

Pages:

1050-1056

Language:

Chinese

ISSN:

10016929

Document type:

Journal article (JA)

Publisher:

Editorial Board of Research of Environmental Sciences, 8 Dayangfang, Beiyuan, Beijing, 100012, China

Abstract:

To determine dynamic changes of airborne microbes' concentration of different underlying surfaces in Qingdao City, monitoring points were set up in five different underlying surfaces (city streets, coastal area, drinking water source, municipal landfill site, and constructed wetlands for wastewater treatment). Airborne microbes were collected by SAS ISO100 and Andersen six stage sampler. The distributions of concentration and size, diurnal variations were systematically studied. Results showed that the concentrations of airborne bacteria were decreasingly ordered: municipal landfill site>city streets>drinking water source>coastal area>constructed wetlands for wastewater treatment. The concentrations of airborne fungi were decreased as: municipal landfill site>constructed wetlands for wastewater treatment>drinking water source>city streets>coastal area. Concentrations of bacteria and fungi in the airborne were (613.1±68.9)and (1300.4±74.3)CFU/m3, which were significantly higher in landfill site than those in other underlying surfaces. Concentrations of bacteria ranged from (155.5±14.2) to (596.6±396.4)CFU/m3, while concentrations of fungi were between (401.9±78.7) to (994.7±63.4) CFU/m3in the other underlying surfaces. The concentration of airborne bacteria in coastal area was significantly higher in the afternoon than that in the morning and noon. The concentrations of airborne bacteria in the other underlying surfaces were basically the same as within experimental error. Concentration distributions of fungi were different among underlying surfaces. The concentrations of airborne fungi in city streets, drinking water source, and constructed wetlands for wastewater treatment were ordered as morning>noon>afternoon, while the concentration of airborne fungi in municipal landfill site showed the sequence morning<noon<afternoon. However, there was no statistically significant difference (P>0.05) between different times of the day except for constructed wetlands and municipal landfill site. Bacterial aerosol in five underlying surfaces were mostly distributed in stage F1 (>7.0 μm) with airborne bacteria showing a skewed distribution. The trend of the aerosol particle size distribution of airborne fungi was basically similar in five different underlying surfaces with airborne fungi showing normal logarithmic distribution. The maximum was in stage F4 (2.1-3.3 μm) except for that municipal landfill site in stage F3 (3.3-4.7 μm). There were differences of airborne microbes CMD (counted median diameter) among underlying surfaces. The median diameters of airborne bacteria ranged from 2.8-4.6 μm. The median diameters of fungi were about 2.0 μm. Slight difference existed in CMD of fungi between five different underlying surfaces.

Number of references:

36

Main heading:

Fungi

Controlled terms:

Aerosols  -  Bacteria  -  Coastal zones  -  Land fill  -  Particle size analysis  -  Reclamation  -  Size distribution  -  Wastewater treatment  -  Wetlands

Uncontrolled terms:

Aerosol particle size distribution  -  Airborne bacteria  -  Airborne fungi  -  Concentration distributions  -  Logarithmic distribution  -  Microbial aerosols  -  Statistically significant difference  -  Underlying surface

Classification code:

804 Chemical Products Generally -  471 Marine Science and Oceanography -  461.9 Biology -  951 Materials Science -  452.4 Industrial Wastes Treatment and Disposal -  442.2 Land Reclamation -  423 Non Mechanical Properties and Tests of Building Materials -  452 Municipal and Industrial Wastes; Waste Treatment and Disposal

Database:

Compendex

Compilation and indexing terms, © 2013 Elsevier Inc