Investigation of temporal and spatial characteristics of carbonyl compounds in the Atmosphere in Kaohsiung

• Main Authors: Chun-I Wu, 吳俊毅
• Other Authors: Chen, Kang-Shin
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/6mgaaa

碩士 === 國立中山大學 === 環境工程研究所 === 95 === The concentrations of atmospheric carbonyls were studied by the LpDNPH-Cartridge and the microcomputer air sampling device at Nanzi and Siaogang sites in Kaohsiung city. Source apportionment was determined by the factor analysis. The results showed that the highest concentrations of carbonyls was acetaldehyde (27.83 μg/m3) at Nanzi, followed by formaldehyde (5.03 μg/m3). At Siaogang, the highest concentrations of carbonyls was acetaldehyde (28.91 μg/m3), followed by formaldehyde (6.92 μg/m3). The concentrations of total carbonyls was higher at Siaogang (57.86 μg/m3) than those at Nanzi (49.74 μg/m3) . The concentrations of total carbonyls at Nanzi were 65.42 μg/m3 in summer and 25.06 μg/m3 in winter, and were 85.09 μg/m3 in summer and 37.12 μg/m3 in winter at Siaogang, due to the fact that summer has stronger photochemical activities than in winter. Additionally, peak rush hours of the traffics, either in the morning or at night, would result in increased concentration of Carbonyls was higher. The concentrations of atmospheric carbonyls were studied by the LpDNPH-Cartridge and the microcomputer air sampling device at Nanzi and Siaogang sites in Kaohsiung city. Source apportionment was determined by the factor analysis. The results showed that the highest concentrations of carbonyls was acetaldehyde (27.83 μg/m3) at Nanzi, followed by formaldehyde (5.03 μg/m3). At Siaogang, the highest concentrations of carbonyls was acetaldehyde (28.91 μg/m3), followed by formaldehyde (6.92 μg/m3). The concentrations of total carbonyls was higher at Siaogang (57.86 μg/m3) than those at Nanzi (49.74 μg/m3) . The concentrations of total carbonyls at Nanzi were 65.42 μg/m3 in summer and 25.06 μg/m3 in winter, and were 85.09 μg/m3 in summer and 37.12 μg/m3 in winter at Siaogang, due to the fact that summer has stronger photochemical activities than in winter. Additionally, peak rush hours of the traffics, either in the morning or at night, would result in increased concentration of Carbonyls was higher. Source apportionment analysis using factor analysis shows that the principle sources at Nanzi were traffic exhausts (motor, diesel, and gasoline vehicle) and stationary sources (industry, restaurant and chemical processes). The main sources at Siaogang were traffic exhausts (motor and gasoline vehicle), stationary sources (industry and restaurant) and secondary photo-chemical reactions.