https://scholars.lib.ntu.edu.tw/handle/123456789/598624
標題: | Deployment of a mobile platform to characterize spatial and temporal variation of on-road fine particles in an urban area | 作者: | Lin T.-C Chiueh P.-T Griffith S.M Liao C.-C TA-CHIH HSIAO |
關鍵字: | Lung deposition surface area (LDSA);Mobile monitoring;Spatial–temporal variation;Traffic-related air pollutant (TRAP);Ultrafine particles (UFPs);black carbon;carbon monoxide;monitoring system;air pollutant;air pollution;building;environmental monitoring;lung deposition surface area;motor vehicle;particle size;particulate matter 2.5;pollution control;respiratory tract parameters;spatiotemporal analysis;traffic;traffic and transport;ultrafine particulate matter;urban area;Taipei;Taiwan | 公開日期: | 2022 | 卷: | 204 | 來源出版物: | Environmental Research | 摘要: | Traffic-related air pollutants (TRAPs) pose a serious health hazard for residents and commuters in urban areas. In this study, a real-time mobile monitoring system was deployed in Taipei, a typical East Asian city with an overlap of high population density, traffic, and special structures (e.g., viaducts), to capture the on-road TRAPs at different times of the day. In general, black carbon, ultrafine particles (UFPs), CO concentrations, and lung deposition surface area (LDSA) were positively correlated with traffic flow, and for PM2.5, a more independent fluctuating concentration was observed. During rush-hour periods, the mean concentrations of UFPs, PM2.5, and LDSA were 6.12 × 104 ± 3.83 × 104 cm?3, 23 ± 8 μg/m3, and 2.29 × 102 ± 1.20 × 102 μm2/cm3, respectively. Additionally, the UFP number concentration and LDSA were two times higher along the high-traffic commuting route than along the lower traffic route. Pollutants tended to accumulate at sites near viaducts and high buildings and were significantly influenced by vehicle composition. In this study, the ratio of LDSA to total particle surface area concentration was used as an indicator of the degree of particle irregularity, which was directly related to aging during transport. ? 2021 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119016994&doi=10.1016%2fj.envres.2021.112349&partnerID=40&md5=299a7804d546cb1eeb8042650f7da38f https://scholars.lib.ntu.edu.tw/handle/123456789/598624 |
ISSN: | 00139351 | DOI: | 10.1016/j.envres.2021.112349 |
顯示於: | 環境工程學研究所 |
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