本研究為深入瞭解交通污染源之特性,選擇苗栗縣環境保護局所設置之公館交通測站,進行車流量統計、懸浮微粒採樣,並透過化學質量平衡 (Chemical Mass Balance; CMB)受體模式進行污染源分析,推測污染來源與影響空氣品質因子,以提供空氣物染防治措施。本研究於假日及非假日期間,針對小型車、機車、大貨車與大客車等四種不同類型車種進行車流量調查;同時分別在交通測及鄰近教室大樓之樓頂對懸浮微粒進行TSP與PM10之採樣及分析;CMB受體模式則針對懸浮微粒之金屬、水溶性離子等成份進行污染源之解析。最後本研究再進一步透過車流量與車輛污染排放量之推估,瞭解其相關性並研擬可行之交通污染源管理策略。
英文摘要
In order to investigate the characteristics of mobile sources, the statistic of traffic flow and the measurement of suspended particles were conducted in the Gonguan air quality monitoring station of Miaoli County in this investigation. Through chemical mass balance (CMB) receptor model and backward trajectory model, the location and contribution of emission sources were further identified. Accordingly, the improvement strategies for mobile sources were further proposed to improve local ambient air quality.
