頁籤選單縮合
題 名 | Association of Cardiovascular Responses in Mice with Source-apportioned PM₂.₅ Air Pollution in Beijing |
---|---|
作 者 | Maciejczyk, Polina; Jin, Lan; Hwang, Jing-shiang; Guo, Xinbiao; Zhong, Mianhua; Thurston, George; Qu, Qingshan; Zhang, Junfeng; Sun, Qinghua; Chen, Lung-chi; | 書刊名 | Aerosol and Air Quality Research |
卷 期 | 18:7 2018.07[民107.07] |
頁 次 | 頁1839-1852 |
專 輯 | Aerosol Source, Transport, Chemistry, and Emission Control |
分類號 | 445.63 |
關鍵詞 | Fine particulate matter; Factor analysis; Heart rate change; Olympics; |
語 文 | 英文(English) |
英文摘要 | In this study, factor analysis and mass regression were used to identify four fine particulate matter sources and estimate their contributions to the ambient air pollution in Beijing. The identified sources were traffic re-suspended soil, mixed industrial sources, oil combustion, and secondary sulfate. The estimated source contributions were then introduced into two models as exposure variables to explore the relationships between cardiovascular responses in mice and PM exposures. We observed that PM2.5 has a small negative acute effect on heart rate, but the individual source factors showed much more significant effects. Traffic re-suspended soil had the most significant effect on heart rate, with a positive contribution on the day of exposure and a negative one on day lag 1. Acute heart rate variability outcomes were better explained by the total PM2.5 than by the source components. Chronic effects were observed as a decreased heart rate but an increased number of heart rate variability outcomes. |
本系統中英文摘要資訊取自各篇刊載內容。