Investigation of the Characteristic and the Sources of Polycyclic Aromatic Hydrocardons in the Atmosphere

• Main Authors: Chia-mei Chen, 陳佳玫
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/92765065473378891522

碩士 === 朝陽科技大學 === 環境工程與管理系碩士班 === 91 === The characteristics and the sources of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere were investigated. Particulate and PAHs samples were collected by high volume samplers, micro-orifice uniform deposit impactor (MOUDI), dry deposition sampling devices and wet deposition sampling devices. Twenty-one PAHs were analyzed by a gas chromatography/mass spectrometer (GC/MS). ISCST3 model, cluster analysis, chi-square test and chemical mass balance (CMB) receptor model were used to identify and quantify the PAHs emission sources. The results of CMB modeling were validated by emission inventories and ground-based trajectories.The results of this study are as follows: (1) The concentration, dry deposition, wet deposition and the particle size distributions of the particulate matter and PAHs in the atmosphere of the central Taiwan were characterized in this study. (2) The results of ISCST3 model analysis showed that the contribution of PAHs from the municipal solid waste incinerator (MSWI) was insignificant for the seven sampling sites. However, the results of cluster analysis and chi-square test indicated the atmospheric PAHs profiles at these sampling sites were correlated to that of MSWI. (3) Seven low reactive PAHs did not provide good estimation for CMB model analysis. The reason could be that less species were chosen. (4) The validation of CMB model analysis for particulate phase PAHs was not well examined by ground-based trajectories. The results showed that total (gas �y particulate) phase PAHs should be considered for CMB analysis. (5) CMB receptor model for PAHs showed that the apportionment of the sources are: mobile source 36.5%, heavy oil combustion 4.03%, natural gas combustion 47.9%, coal combustion 8.33% and diesel combustion 3.21% (6) The validation of CMB model analysis with emission inventories and ground-based trajectories showed that CMB could be used to apportion source emission of PAHs.