| Summary: | 碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 101 === In order to determine the variation in indoor air quality and its correlation to the number of people indoor as well as the outdoor air quality, this study conducted on-site testing of five public places, including 2 places under the first category of places of special demands, and 3 places under the secondary category of places for general public gathering. The test items consisted of 11 items, including: CO2, CO, HCHO, TVOC, O3, PM10, PM2.5, bacteria and fungus, temperature and humidity. The variation in the number of people is recorded hourly to assess its correlation with the air quality. Also, this study collected the air quality data from the monitoring stations of the Environmental Protection Agency(EPA) at the same time air samples were taken in this study, to analyze the characteristics of the impact factors.
The results show that the maximum value of CO2 (1,183 ppm) appeared at the aviation station, which is the testing site with the highest number of people among all of the testing sites. The value of CO2 in four out of five testing results exceeded the recommended value of related regulations, showing that CO2 is still the substance of most concern in relation to indoor air quality. According to the study, the variation tendency of CO2, PM10 and PM2.5 were also positively correlated with the number of people in the room.
Based on the joint monitoring results of CO, O3, PM10 and PM2.5 collected from the air monitoring stations, except for the CO density where the indoor test value of this study was higher than the value collected from the air monitoring stations for outdoor air, the test values of O3, PM10 and PM2.5 in indoor air were all lower than those of the outdoor air obtained from the monitoring stations. Furthermore, while the variations of CO, PM10 and PM2.5 are correlated to the outdoor air to a certain extent, due to the difference in the generation conditions and reasons for O3 indoor and outdoor and also due to the large difference in the density, the correction for O3 is not clear. Therefore, according to the current comparative results, it can be seen that CO, PM10 and PM2.5 can be more easily influenced by outdoor air quality.
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