Secondary Organic Aerosol Formation Potential from Ambient Air in Beijing: Effects of Atmospheric Oxidation Capacity at Different Pollution Levels
文献类型：期刊论文
| 作者 | Liu, Jun; Chu, Biwu; Chen, Tianzeng; Zhong, Cheng; Liu, Changgeng; Ma, Qingxin; Ma, Jinzhu; Zhang, Peng; He, Hong
|
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-04-20 |
| 卷号 | 55期号:8页码:4565-4572 |
| ISSN号 | 0013-936X |
| 关键词 | SOA formation potential OFR atmospheric oxidation capacity pollution level |
| 英文摘要 | Secondary organic aerosol (SOA) plays a critical role in sustained haze pollution in megacities. Traditional observation of atmospheric aerosols usually analyzes the ambient organic aerosol (OA) but neglects the SOA formation potential (SOAFP) of precursors remaining in ambient air. Knowledge on SOAFP is still limited, especially in megacities suffering from frequent haze. In this study, the SOAFP of ambient air in urban Beijing was characterized at different pollution levels based on a two-year field observation using an oxidation flow reactor (OFR) system. Both OA and SOAFP increased as a function of ambient pollution level, in which increasing concentrations of precursor volatile organic compounds (VOCs) and decreasing atmospheric oxidation capacity were found to be the two main influencing factors. To address the role of the atmospheric oxidation capacity in SOAFP, a relative OA enhancement ratio (EROA = 1 + SOAFP/OA) and the elemental composition of the OA were investigated in this study. The results indicated that the atmospheric oxidation capacity was weakened and resulted in higher SOAFP on more polluted days. The relationship found between SOAFP and the atmospheric oxidation capacity could be helpful in understanding changes in SOA pollution with improving air quality in the megacities of developing countries. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46070]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Panzhihua Univ, Sch Biol & Chem Engn, Panzhihua 617000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jun,Chu, Biwu,Chen, Tianzeng,et al. Secondary Organic Aerosol Formation Potential from Ambient Air in Beijing: Effects of Atmospheric Oxidation Capacity at Different Pollution Levels[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(8):4565-4572. |
| APA | Liu, Jun.,Chu, Biwu.,Chen, Tianzeng.,Zhong, Cheng.,Liu, Changgeng.,...&He, Hong.(2021).Secondary Organic Aerosol Formation Potential from Ambient Air in Beijing: Effects of Atmospheric Oxidation Capacity at Different Pollution Levels.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(8),4565-4572. |
| MLA | Liu, Jun,et al."Secondary Organic Aerosol Formation Potential from Ambient Air in Beijing: Effects of Atmospheric Oxidation Capacity at Different Pollution Levels".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.8(2021):4565-4572. |
入库方式： OAI收割
来源：生态环境研究中心
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