| Summary: | 碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程所 === 92 === In this dissertation, it begins by explaning this motivation and the purposes of investigation in this study. It then describes the methods and the results of a research project that was conduted in order to discover and look into more about the Polyclic Aromatic Hydeocarbons (PAHs). This was down by observing the variety of atmosphere and had finished the data colleting, which began since October of 2002 till June of 2003 by using the 310 Universal Air Sampler. Furthermore the atmosphere samples vary from the particles of (PM1、PM1-10 and PM10), and 21 kinds of PAHs substances investigate the gas-particle partition of the PAHs. When if comes to the steps of experimental methods they were done through the pre-clean, the sampling, the extraction by the soxhlt, the rot-evaporation, the fraction and the purification of N2, so that the samples could be analyzed by GC/MS.
This study is based on the J-P model (June 1977; Pankow 1987), which states the particulate fraction ψ=CθΡ0L + Cθ . It also estimates the concentration of the surface areas concentration in varieties of particles and analyzes by calculating the sub-cooled liquid vapor pressure in different temperatures through the formula to estimate the percentages of the suspended particles, which adsorbed on the PAHs substances. Thereby the aim of this study is to do the comparisons between the experimental values from the collecting data and the J-P model recounted.
Amongst the findings from this research, it has revealed that the more θ, the more ψ is. The values of surface areas concentration in varieties particles were θPM1=4.77*10-2 cm2cm3 、θPM1-10=3.97*10-3 cm2cm3 及θPM10= 9.18*10-3 cm2cm3 . The value of ψPM1 is about 1~10 times than the values of ψPM1-10 is about 1~3 times than the ψPM1-10 in the samples of PAHs substances. As the result, it means the fine particles dominate the distribution of PAHs.
At this study, the values of the theoretical particulate fraction in J-P model were higher then the experiential values beside the compounds of Acenapththylene and Acenaphthene, their experiential values were double to 1~13 times, other compounds were smaller then the value of theory, the ratio of experiential value to the value of theory is 0.16~0.95, and the more molecular weight of PAHs compounds, the value close to 1, it means the highly corelation. From the view of vapor pressure（P0L）, the less pressure of the PAHs, the more particulate fraction(ψ) of the theory, the same as the experiential value. It means the more pressure（P0L）, the more existing at gas phase, the less existing at particle phase oppositely.
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