https://scholars.lib.ntu.edu.tw/handle/123456789/462951
標題: | Contributions of local pollution emissions to particle bioreactivity in downwind cities in China during Asian dust periods | 作者: | Ho, K.-F. Wu, K.-C. Niu, X. Wu, Y. Zhu, C.-S. Wu, F. Cao, J.-J. Shen, Z.-X. Hsiao, T.-C. Chuang, K.-J. Chuang, H.-C. TA-CHIH HSIAO |
關鍵字: | Air pollution; Dust storm; Metal; Physicochemistry; Source apportionment | 公開日期: | 2019 | 卷: | 245 | 起(迄)頁: | 675-683 | 來源出版物: | Environmental Pollution | 摘要: | This study investigated the effects of pollution emissions on the bioreactivity of PM2.5 during Asian dust periods. PM2.5 during the sampling period were 104.2 and 85.7 μg m−3 in Xi'an and Beijing, respectively, whereas PM2.5 which originated from the Tengger Desert was collected (dust background). Pollution conditions were classified as non-dust days, pollution episode (PE), dust storm (DS)-1, and DS-2 periods. We observed a significant decrease in cell viability and an increase in LDH that occurred in A549 cells after exposure to PM2.5 during a PE and DS-1 in Xi'an and Beijing compared to Tengger Desert PM2.5. Positive matrix factorization was used to identify pollution emission sources. PM2.5 from biomass and industrial sources contributed to alterations in cell viability and LDH in Xi'an, whereas vehicle emissions contributed to LDH in Beijing. OC, EC, Cl−, K+, Mg2+, Ca, Ti, Mn, Fe, Zn, and Pb were correlated with cell viability and LDH for industrial emissions in Xi'an during DS. OC, EC, SO42−, S, Ti, Mn, and Fe were correlated with LDH for vehicle emissions in Beijing during DS. In conclusion, the dust may carry pollutants on its surface to downwind areas, leading to increased risks of particle toxicity. © 2018 Elsevier LtdThe significance and novelty of this study was that sand dust may provide a platform to intermix with chemicals on its surfaces, thereby increasing the bioreactivity of PM2.5 during dust storm episodes. © 2018 Elsevier Ltd |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/462951 | DOI: | 10.1016/j.envpol.2018.11.035 | SDG/關鍵字: | Cells; Cytology; Dust; Factorization; Industrial emissions; Metals; Storms; Dust storm; Industrial sources; Local pollutions; Physicochemistry; Pollution emissions; Pollution episodes; Positive Matrix Factorization; Source apportionment; Air pollution; calcium; carbon; chloride; iron; lactate dehydrogenase; lead; magnesium ion; manganese; nitric oxide; organic carbon; potassium; sulfoxide; sulfur; titanium; zinc; anthropogenic source; atmospheric pollution; dust storm; emission inventory; metal; physicochemical property; pollution exposure; pollution monitoring; quantitative analysis; source apportionment; A-549 cell line; air pollution; Article; biological activity; biomass; carbon footprint; cell viability; chemical analysis; chemical composition; chemical reaction; China; controlled study; correlational study; dust exposure; elemental analysis; environmental exposure; exhaust gas; human; human cell; in vitro study; industrial waste; particulate matter; physical chemistry; pollutant; pollution monitoring; risk assessment; toxicity; air pollutant; analysis; chemistry; city; dust; environmental monitoring; particle size; pollution; Beijing [Beijing (ADS)]; Beijing [China]; China; Shaanxi; Xian; A549 Cells; Air Pollutants; Beijing; China; Cities; Dust; Environmental Monitoring; Environmental Pollution; Humans; Particle Size; Particulate Matter |
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。