| Summary: | 碩士 === 朝陽科技大學 === 環境工程與管理系碩士班 === 97 === Motorcycles, being the most popular personal means of transportation in Taiwan, have increased in number with rising living standards. Many researches have indicated that vehicle emissions are the main pollution source of most Volatile Organic Compounds (VOCs) in the atmosphere. Also, the Carbon monoxide and THC emitted by mobile pollution sources are considerably high in percentage. Therefore, this research will investigate the VOCs, CO, and THC concentrations motorcyclists are exposed during their commune in metropolitan areas.The results show that on non holidays, CO concentration during peak hours is 11.8 ± 8.37 ppm and 3.54 ± 2.32 ppm for non peak hours. Also on non holidays, peak hours THC concentration is at 7.79 ± 4.37 ppm and non peak hours 1.56 ± 0.98 ppm. VOCs concentration during peak hours is 4589 ± 509 μg/m3 and 1794 ± 122 μg/m3 during non peak hours on non holidays. Scatterplot is applied to relate stationary sampling and car flow. The results demonstrate positive relativity between the CO, THC, VOCs and car flow amount (the correlation coefficients are 0.73, 0.8 and 0.83) indicating car flow having evident effects on concentration of CO, THC, and VOCs. The BTEX ratio averages 1: 4.04: 0.8: 2.1 with highest concentration of Toluene seconded by Xylene.
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