| Summary: | 碩士 === 國立雲林科技大學 === 環境與安全衛生工程系 === 102 === Many research suggest that fine particulate matters (PM2.5) often impacts on Taiwan’s air quality and is hazardous to human health. For the significant issue, in May, 2012, the Taiwan EPA stipulated the PM2.5 standards, 15 μg/m3 per year and 35 μg/m3 per day. Realizing how to achieve the PM2.5 standards should assess the PM2.5 influence on air quality from the major sources, and develop the control strategies.
The air pollution sources to impact on air quality are extensive in atmospheric, and could be divided into point, line and area source by the pollution type. Point source include industry and power plant, line source are the mobile source, area source include the deflation dust by the construction engineering. This study used air quality model to simulate the base case in 2010, the influence of point, line, area source, respectively, also conduct the impact on air quality of the S industry, the category of the line source.
Simulation result of base case indicated that the PM2.5 annual concentration is 28.03 μg/m3, and in different essential source, the effects of the highest concentration is area source (10.8 μg/m3, 45.4%) , the second is point source (5.82 μg/m3, 23.6%), and the lowest effect is line source (5.19 μg/m3, 21.4%). S industrial impact on Taiwan PM2.5 concentration is 0.19 μg/m3, the ratio is 1.18%. The worst impact region of air quality is the Yun-Chia-Nan, the influence concentration is 0.47 μg/m3 and the ratio is 2.24%. The average of daily maximum ozone concentrations is 0.05 ppb and the ratio is 0.11%. The most impact region of air quality is the Central region (0.09 ppb, 0.18%). For the composition of PM2.5, the highest ratio contribution from S industry is nitrate (3.88%), second is ammonium (1.93%), and the lowest is sulfate (0.73%).
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