https://scholars.lib.ntu.edu.tw/handle/123456789/598669
標題: | Organic carbon and acidic ions in PM2.5 contributed to particle bioreactivity in Chinese megacities during haze episodes | 作者: | Ho K.-F Lee Y.-C Niu X Xu H Zhang R Cao J.-J Tsai C.-Y Hsiao T.-C Chuang H.-C. TA-CHIH HSIAO |
關鍵字: | Air pollution;Haze;Inflammation;Oxidative stress;PM2.5;acidity;air quality;bioactivity;cardiology;cardiovascular disease;concentration (composition);haze;inorganic carbon;megacity;megacryst;organic carbon;particulate matter;spatiotemporal analysis;China;carbon;ion;aerosol;air pollutant;city;environmental monitoring;human;particle size;season;Aerosols;Air Pollutants;Carbon;Cities;Environmental Monitoring;Humans;Ions;Particle Size;Particulate Matter;Seasons | 公開日期: | 2022 | 卷: | 29 | 期: | 8 | 起(迄)頁: | 11865-11873 | 來源出版物: | Environmental Science and Pollution Research | 摘要: | Fine particulate matter (PM2.5) has been linked to cardiopulmonary disease and systemic effects in humans. However, few studies have investigated the particle bioreactivity in Chinese megacities during haze episodes. The objective of this study was to determine the contributions of chemical components in PM2.5 to particle bioreactivity in Chinese megacities during haze episodes. PM2.5 samples were collected in 14 megacities across China from 23 December 2013 to 16 January 2014. Average PM2.5 concentrations ranged 88.92~199.67 μg/m3. Organic carbon (OC), elemental carbon (EC), anions, and cations per unit of PM2.5 were linked to cellular bioreactivity (i.e., reactive oxygen species (ROS) as assessed by dichlorodihydrofluorescein diacetate (DCFH) and inflammation as assessed by interleukin (IL)-6 in A549 cells). The contributions of chemicals in PM2.5 to ROS and inflammation were examined by the Pearson correlation coefficient and random forests. These results indicated that OC, Ca2+, SO42?, Cl?, F?, K+, and NO3? contributed to ROS production, whereas OC, Cl?, EC, K+, F?, Na+, and Ca2+ contributed to inflammation. In conclusion, PM2.5-contained OC and acidic ions are important in regulation of oxidative stress and inflammation during haze episodes. Our findings suggest that severe haze PM2.5 events cause deterioration in air quality and may adversely affect human health. ? 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115347161&doi=10.1007%2fs11356-021-16552-0&partnerID=40&md5=8a52a11a15099683096df72360a0a453 https://scholars.lib.ntu.edu.tw/handle/123456789/598669 |
ISSN: | 09441344 | DOI: | 10.1007/s11356-021-16552-0 |
顯示於: | 環境工程學研究所 |
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