Long-term trend of NO2 and SO2 in industrial and agricultural cities

• Main Authors: Huang, Kai-Yi, 黃凱翊
• Other Authors: Lee Chih-Sheng
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/g4av7x

碩士 === 崑山科技大學 === 環境工程研究所 === 106 === In Taiwan, rapid industrialization leads to deteriorate air quality in the past three decades. There were over 70 air-quality monitoring stations for the entire Taiwan. This study aims to focus on long-term trend of air qualities in industrial and agricultural cities between 2005 and 2015 in Taiwan. The air pollutants of NO2 and SO2 were selected and the original data were collected from several EPA air-quality monitoring stations, including 8 stations in Kaohsiung city (industrial city in this study), 2 stations in Yilan county and 1 in Hualien county (agricultural cities in this study). The collected data were first deseaonalized to remove cyclical fluctuations. And then, 7-month moving average was employed to smooth data and further to find the long-term trends. The decreasing trends of NO2 and SO2 were used to indicate which city (agricultural or industrial cities) was significant. The results show that the trends of NO2 for all cities decreased year by year, maximum decreasing rate for Zuoying station but minimum for Mino station (all in Kaohsiung city). On the other hand, the trend of SO2 increased significantly for Renwu station, but less decreasing rate for Mino station (all in Kaohsiung city). The decreasing trends of NO2 and SO2 was significant in industrial city, less in agricultural cities.