Atmospheric Bioaerosols During Autumn and Winter Seasons in Tainan Area

• Main Authors: Shih, Cheng-Yuang, 施承遠
• Other Authors: Huang, Hsiao-Lin
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/e9yjv5

碩士 === 嘉南藥理大學 === 職業安全衛生系 === 106 === Air pollution has been serious in recent years. Autumn and winter are the seasons of deteriorating air quality in Taiwan. In order to avoid outdoor workers suffering from the harm of airborne microorganisms, this study aims to explore bioaerosols in autumn and winter and the related air parameters that may affect the biological aerosols. We hope to understand the characteristics and influencing factors of atmospheric biological pollutants in Tainan area and put forward feasible protection suggestions for outdoor workers, which can be used as a reference for employers and workers in occupational safety and health management of bioaerosol exposure. Firstly, the six-stage bioaerosol sampler, particle size analyzer, and anemometer were used to sample and monitor atmospheric bacteria, fungi, PM1, PM2.5, PM10, temperature, relative humidity, and wind speed from September 2017 to February 2018 in autumn and winter of Tainan. Simultaneously, ozone concentration and AQI, which were monitored by Tainan’s air quality monitoring station, were collected from Taiwan Environmental Protection Administration. Secondly, the seasonal differences of bioaerosol concentration, particle size distribution, and each monitored parameter were discussed. Finally, the correlation analysis between bioaerosols and each air parameter was carried out by using SPSS software. The result shows that there was no significant difference in the concentration of bacterial bioaerosols between the two seasons. However, the fungal bioaerosol concentration in winter is significantly higher than that in autumn. The size distribution of bacterial and fungal bioaerosols is mainly below 1~2 μm. The particle concentration in winter is significantly higher than that in autumn, and the particle distribution in the two seasons is dominated by fine particles. Except for winter fungi, the concentrations of two-season bacterial and fungal bioaerosols are positively correlated with PM, but negatively correlated with temperature and ozone. Bacterial and Fungal bioaerosols have significant positive correlation with wind speed in winter, but only with relative humidity in autumn. AQI is not suitable to be used as an early-warning index for the hazard prevention of biological pollutants because the concentrations of bacterial and fungal bioaerosols have no significant correlation with AQI in two seasons. As bioaerosol concentration is mostly positively and negatively correlated with PM and ozone concentration, it is recommended that employers continue to protect outdoor workers in accordance with the "Prevention Guidelines for Workplace Hazards in Response to Air Quality Deterioration" provided by the Ministry of Labor.