| Summary: | 碩士 === 嘉南藥理科技大學 === 環境工程與科學系碩士班 === 96 === The purpose of the study is to explore the characteristics, temporal and spatial variation and trend of aerosol, sulfate and nitrate, and case study for Tainan City based on data colleted from 2002 to 2006 of aerosol, sulfate and nitrate from manual operation monitoring station of Tainan city, Taipei city , Taichung city and Chyaiu-Tainan air basin .
The research results show that : (1) the concentration of aerosol appears to be high in winter, whereas to be low in summer. The phenomenon is due to large amount of aerosol carried by northeast wind in winter. Because SOR appears to be high in winter ,whereas to be low in summer; while NOR vice versa. Furthermore, The value of SOR ranging from 0.34 to 0.74 and NOR ranging from 0.11 to 0.34 in Tainan City is apparently high which indicate sulfate mostly conditioned to the means of distant emissions. (2) the concentrations of sulfate and sulfur dioxide in moderate aerosol day are bigger than in clear aerosol day and nitrate and nitrogen dioxide also have exhibited the same phenomenon, which show the concentration of TSP have the close relationship with the concentrations of sulfate, sulfur dioxide, nitrate, and nitrogen dioxide. (3) Considering the healthy effect of pollutants on human health ,we find the priority of pollutant control strategy is NMHC ,and TSP is second. But it will be emphasized on the emission reduction of sulfur dioxide and nitrogen dioxide to drcrease secondary particulate concentration.
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