南方典型旅游城市空气微生物粒径分布特征

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Abstract The size distributions and median diameters were investigated in detail with imitated six-stage Andersen sampler at four selected sampling sites in typical tourist city in southeast China. Results showed the particle percentage of airborne bacteria decreased from stage 1to stage 6with skewed distribution at different sampling sites. The highest percentage of bacterial particle was recorded at stage 1at TJCR (Tianmushan Jiaogong Cross Road), GSUJ (Zhejiang Gongshang University Jiaogong Campus), YRBS (Yan'an Road Business Street) and BLQG (Breeze-ruffled Lotus at Quyuan Garden) with the percentage of 29.1%, 31.8%, 33.5% and 25.4%, respectively, while the lowest was observed at stage 6with the percentage of 11.7%, 11.2%, 6.5% and 11.1%, respectively. The percentage of airborne fungi increased gradually from stage 1to stage 4, and then decreased from stage 4to stage 6with normal logarithmic distribution. The highest percentage of fungi was recorded at stage 4with the percentage of 30.3%, 30.2%, 31.7% and 28.3%, respectively, while the lowest was observed at stage 6with the percentage of 5.2%, 5.1%, 3.3% and 4.5%, respectively. Moreover, Penicillium, Alternaria, Aspergillus, and Cladosporium was recorded with normal logarithmic distribution. Finally, the median diameters of airborne bacteria were larger than those of airborne fungi at different sampling sites, and the highest median diameter of airborne bacteria was found at YRBS, while the highest median diameter of airborne fungi was observed at GSUJ. The present paper suggested the great difference of microbial size distribution in the air, which could provide scientific basis for the prevention and control of microbial pollution indoors and outdoors in urban ecosystem.

Key words： airborne microbe bioaersol size distribution Penicillium Cladosporium

Received: 31 May 2016

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	YAO Wen-chong
	LOU Xiu-qin
	FANG Zhi-guo
	OUYANG Zhi-yun

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YAO Wen-chong,LOU Xiu-qin,FANG Zhi-guo等. The size distribution of airborne microbes in typical tourist city in southeast China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 2938-2943.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/2938

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