| Summary: | 碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 99 === Understanding the characteristic of street dust in Northern Taiwan Area by two strategies. Firstly, collecting six county street dust samples in Northern Taiwan. Secondly, selecting 30 roads and collecting the street dust samples in Taoyuan County. Lastly. The collection of street dust samples according to U. S. EPA AP-42 Procedures.There are based on a review of American Society for Testing and Materials (ASTM) methods C-136.
The amount of street dust loading are between 0.738 to 14.176 g/m2. The size of weight dust size is 9.6 ± 1.6 wt% with <75 μm, dust size is 27.9 ± 5.9 wt% with 75 ~ 297 μm, dust size is 32.6 ± 4.5 wt% with 297 ~ 850 μm and dust size is 30.0 ± 5.2% with >850 μm. In Taoyuan County, the average per month from the road dust load and average silt load value to the discussion, Township / City street dust roads of the average monthly load variability smaller, road dust load is 2.892 ± 0.786 g/m2, County Road dust load of the average monthly is 3.621 ± 0.897 g/m2, Provincial Road dust load of the average monthly load variability of the larger road dust, road dust load is 3.787 ± 1.179 g/m2, in order to compare aspects of silt dust load, Provincial silt load is 0.421 ± 0.143 g/m2, County Road silt load is 0.457 ± 0.133 g/m2, Township / City silt load is 0.383 ± 0.132 g/m2.
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