Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-5239-2017 |
Enhanced hydrophobicity and volatility of submicron aerosols under severe emission control conditions in Beijing | |
Wang, Yuying1; Zhang, Fang1; Li, Zhanqing1,2,3; Tan, Haobo4; Xu, Hanbing5; Ren, Jingye1; Zhao, Jian6,7; Du, Wei6,7; Sun, Yele6,7 | |
2017-04-24 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | A series of strict emission control measures was implemented in Beijing and the surrounding seven provinces to ensure good air quality during the 2015 China Victory Day parade, rendering a unique opportunity to investigate the anthropogenic impact of aerosol properties. Submicron aerosol hygroscopicity and volatility were measured during and after the control period using a hygroscopic and volatile tandem differential mobility analyzer (H/V-TDMA) system. Three periods, namely the control clean period (Clean1), the non-control clean period (Clean2), and the non-control pollution period (Pollution), were selected to study the effect of the emission control measures on aerosol hygroscopicity and volatility. Aerosol particles became more hydrophobic and volatile due to the emission control measures. The hygroscopicity parameter (kappa/of 40-200 nm particles decreased by 32.0-8.5% during the Clean1 period relative to the Clean2 period, while the volatile shrink factor (SF) of 40-300 nm particles decreased by 7.5-10.5 %. The emission controls also changed the diurnal variation patterns of both the probability density function of kappa (kappa-PDF) and the probability density function of SF (SF-PDF). During Clean1 the kappa-PDF showed one nearly hydrophobic (NH) mode for particles in the nucleation mode, which was likely due to the dramatic reduction in industrial emissions of inorganic trace gases. Compared to the Pollution period, particles observed during the Clean1 and Clean2 periods exhibited a more significant nonvolatile (NV) mode throughout the day, suggesting a more externally mixed state particularly for the 150 nm particles. Aerosol hygroscopicities increased as particle sizes increased, with the greatest increases seen during the Pollution period. Accordingly, the aerosol volatility became weaker (i.e., SF increased) as particle sizes increased during the Clean1 and Clean2 periods, but no apparent trend was observed during the Pollution period. Based on a correlation analysis of the number fractions of NH and NV particles, we found that a higher number fraction of hydrophobic and volatile particles during the emission control period. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399916400001 |
WOS关键词 | PEARL RIVER DELTA ; HIGH RELATIVE-HUMIDITY ; HYGROSCOPIC PROPERTIES ; MIXING STATE ; ATMOSPHERIC PARTICLES ; CHEMICAL-COMPOSITION ; ORGANIC AEROSOLS ; CCN ACTIVITY ; CHINA ; PARAMETER |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30867 |
专题 | 地球科学 |
作者单位 | 1.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA; 3.Univ Maryland, ESSIC, College Pk, MD 20742 USA; 4.China Meteorol Adm, Inst Trop & Marine Meteorol, Key Lab Reg Numer Weather Predict, Guangzhou 510080, Guangdong, Peoples R China; 5.Sun Yat Sen Univ, Shared Expt Educ Ctr, Guangzhou 510275, Guangdong, Peoples R China; 6.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 7.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Yuying,Zhang, Fang,Li, Zhanqing,et al. Enhanced hydrophobicity and volatility of submicron aerosols under severe emission control conditions in Beijing[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(8). |
APA | Wang, Yuying.,Zhang, Fang.,Li, Zhanqing.,Tan, Haobo.,Xu, Hanbing.,...&Sun, Yele.(2017).Enhanced hydrophobicity and volatility of submicron aerosols under severe emission control conditions in Beijing.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(8). |
MLA | Wang, Yuying,et al."Enhanced hydrophobicity and volatility of submicron aerosols under severe emission control conditions in Beijing".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.8(2017). |
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