Modeling and Analysis of Potential Damage of High Bacteria Content to Human Body in Haze Environment

Xi Li

Ekoloji, 2019, Issue 108, Pages: 753-758

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Abstract

In recent years, haze weather occurs frequently in Beijing, and the accumulation of air particulate matter is one of the main causes of haze weather. As an important air particulate matter, biological aerosol is harmful to human health. This study investigated the distribution of biological aerosol concentration and particle size in haze weather, and the Spearman’s relationship between biological aerosol concentration and air quality index PM2.5 (AQI), ambient temperature and humidity. The correlation was studied. The particle size distribution of bio-aerosols in severe fog and haze weather in winter and summer was analyzed. The potential damage to human body was also studied. The results showed that the concentration of bio-aerosols was negatively correlated with PM2.5 (AQI) and positively correlated with ambient temperature. Environmental humidity was negatively correlated with bacterial aerosol concentration and positively correlated with fungal aerosol concentration. In winter, the maximum concentration of bacterial and fungal aerosols was detected in the range of 4.5-7.0 μm and 2.1-3.3 μm, respectively, while in summer, the highest concentration of bacterial and fungal aerosols were distributed. In the range of 3.3-4.5 μm, the results of this study will provide basic data for evaluating the hazards of bio-aerosols to human health under different haze conditions.

Keywords

haze, bacterial aerosol, fungal aerosol, PM2.5 (AQI), Spearman’s correlation, particle size distribution

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