https://scholars.lib.ntu.edu.tw/handle/123456789/631321
標題: | Impacts of COVID-19's restriction measures on personal exposure to VOCs and aldehydes in Taipei City | 作者: | Yen, Yu Chuan Ku, Chun Hung TA-CHIH HSIAO Chi, Kai Hsien Peng, Chiung Yu Chen, Yu Cheng |
關鍵字: | COVID-19 | Health risk | Impacts and mitigation | Personal exposure | VOCs and aldehydes | 公開日期: | 1-七月-2023 | 卷: | 880 | 來源出版物: | Science of the Total Environment | 摘要: | The Coronavirus Disease 2019 (COVID-19) pandemic provided an unprecedented natural experiment, that allowed us to investigate the impacts of different restrictive measures on personal exposure to specific volatile organic compounds (VOCs) and aldehydes and resulting health risks in the city. Ambient concentrations of the criteria air pollutants were also evaluated. Passive sampling for VOCs and aldehydes was conducted for graduate students and ambient air in Taipei, Taiwan, during the Level 3 warning (strict control measures) and Level 2 alert (loosened control measures) of the COVID-19 pandemic in 2021–2022. Information on the daily activities of participants and on-road vehicle counts nearby the stationary sampling site during the sampling campaigns were recorded. Generalized estimating equations (GEE) with adjusted meteorological and seasonal variables were used to estimate the effects of control measures on average personal exposures to the selected air pollutants. Our results showed that ambient CO and NO2 concentrations in relation to on-road transportation emissions were significantly reduced, which led to an increase in ambient O3 concentrations. Exposure to specific VOCs (benzene, methyl tert-butyl ether (MTBE), xylene, ethylbenzene, and 1,3-butadiene) associated with automobile emissions were remarkably decreased by ~40–80 % during the Level 3 warning, resulting in 42 % and 50 % reductions of total incremental lifetime cancer risk (ILCR) and hazard index (HI), respectively, compared with the Level 2 alert. In contrast, the exposure concentration and calculated health risks in the selected population for formaldehyde increased by ~25 % on average during the Level 3 warning. Our study improves knowledge of the influence of a series of anti-COVID-19 measures on personal exposure to specific VOCs and aldehydes and its mitigations. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/631321 | ISSN: | 00489697 | DOI: | 10.1016/j.scitotenv.2023.163275 |
顯示於: | 環境工程學研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。