| Summary: | 碩士 === 國立成功大學 === 環境工程學系 === 104 === This study investigated that the air toxics profiles from mobile sources, stationary sources, and the operations in port in an industrial metropolitan area in Taiwan. Benzene, formaldehyde, 1, 3-butadiene, arsenic, 2,3,7,8-TCDD, and diesel particulate matter (DPM) are selected as target air toxics due to their toxicity. Emissions of the air toxics were calculated by emission factors and activity from these souces and verified by inventory database. AERMOD model was applied to simulate the airborne the air toxics concentration which was uased to evaluate cancer risk. The potential impact on population caused by various souces was also evaluated in this study. The results of emission estimation showed that the emissions of benzene, 1,3-butadiene, and formaldehyde mainly attributed from mobile sources. DPM was emitted from port operations and most of arsenic and 2,3,7,8-TCDD were emitted from stationary sources in this study area. DPM is the pollutant which posted the highest cancer risk among all six toxics, and following by 1,3-butadiene, benzene, formaldehyde, arsenic, and 2,3,7,8-TCDD. The dominate sources of DPM were ocean-going vessels and desiel trucks. In the view of population impact, emission reduction from mobile sources may lead a lower cancer burden than those from stationary sources or port operation
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