Abstract
The chemical composition of Beijing aerosol was measured during summer and winter. Two distinct episodes were identified. Water-soluble potassium (K{sup +}) increased significantly during the firework episode in winter with an episode to non-episode ratio of 4.97, whereas the biomass burning (BB) episode in summer was characterized by high episode to non-episode ratios of levoglucosan (6.38) and K{sup +} (6.90). The BB and firework episodes had only a minor influence on the water-soluble OC (organic carbon) to OC ratio. Based on separate investigations of episode and non-episode periods, it was found that: (i) sulfate correlated strongly with both relative humidity and nitrate during the typical winter period presumably indicating the importance of the aqueous-phase oxidation of sulfur dioxide by nitrogen dioxide, (ii) oxalate and WSOC during both winter and summer in Beijing were mainly due to secondary formation, and (iii) high humidity can significantly enhance the formation potential of WSOC in winter. -- Highlights: • Two episodes were identified based on the chemical composition of Beijing aerosol. • Levoglucosan and K{sup +} increased significantly during the biomass burning episode. • The firework episode was characterized by high concentrations of K{sup +}. • WSOC and oxalate exhibited secondary nature during both
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Cheng, Yuan;
[1]
Engling, Guenter;
[2]
He, Ke-bin;
[1]
State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)];
Duan, Feng-kui;
Du, Zhen-yu;
Ma, Yong-liang;
Liang, Lin-lin;
Lu, Zi-feng;
[1]
Liu, Jiu-meng;
[3]
Zheng, Mei;
[4]
Weber, Rodney J.
[3]
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing (China)
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan (China)
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA (United States)
- College of Environmental Sciences and Engineering, Peking University, Beijing (China)
Citation Formats
Cheng, Yuan, Engling, Guenter, He, Ke-bin, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)], Duan, Feng-kui, Du, Zhen-yu, Ma, Yong-liang, Liang, Lin-lin, Lu, Zi-feng, Liu, Jiu-meng, Zheng, Mei, and Weber, Rodney J.
The characteristics of Beijing aerosol during two distinct episodes: Impacts of biomass burning and fireworks.
United Kingdom: N. p.,
2014.
Web.
doi:10.1016/J.ENVPOL.2013.10.037.
Cheng, Yuan, Engling, Guenter, He, Ke-bin, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)], Duan, Feng-kui, Du, Zhen-yu, Ma, Yong-liang, Liang, Lin-lin, Lu, Zi-feng, Liu, Jiu-meng, Zheng, Mei, & Weber, Rodney J.
The characteristics of Beijing aerosol during two distinct episodes: Impacts of biomass burning and fireworks.
United Kingdom.
https://doi.org/10.1016/J.ENVPOL.2013.10.037
Cheng, Yuan, Engling, Guenter, He, Ke-bin, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)], Duan, Feng-kui, Du, Zhen-yu, Ma, Yong-liang, Liang, Lin-lin, Lu, Zi-feng, Liu, Jiu-meng, Zheng, Mei, and Weber, Rodney J.
2014.
"The characteristics of Beijing aerosol during two distinct episodes: Impacts of biomass burning and fireworks."
United Kingdom.
https://doi.org/10.1016/J.ENVPOL.2013.10.037.
@misc{etde_22245722,
title = {The characteristics of Beijing aerosol during two distinct episodes: Impacts of biomass burning and fireworks}
author = {Cheng, Yuan, Engling, Guenter, He, Ke-bin, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)], Duan, Feng-kui, Du, Zhen-yu, Ma, Yong-liang, Liang, Lin-lin, Lu, Zi-feng, Liu, Jiu-meng, Zheng, Mei, and Weber, Rodney J.}
abstractNote = {The chemical composition of Beijing aerosol was measured during summer and winter. Two distinct episodes were identified. Water-soluble potassium (K{sup +}) increased significantly during the firework episode in winter with an episode to non-episode ratio of 4.97, whereas the biomass burning (BB) episode in summer was characterized by high episode to non-episode ratios of levoglucosan (6.38) and K{sup +} (6.90). The BB and firework episodes had only a minor influence on the water-soluble OC (organic carbon) to OC ratio. Based on separate investigations of episode and non-episode periods, it was found that: (i) sulfate correlated strongly with both relative humidity and nitrate during the typical winter period presumably indicating the importance of the aqueous-phase oxidation of sulfur dioxide by nitrogen dioxide, (ii) oxalate and WSOC during both winter and summer in Beijing were mainly due to secondary formation, and (iii) high humidity can significantly enhance the formation potential of WSOC in winter. -- Highlights: • Two episodes were identified based on the chemical composition of Beijing aerosol. • Levoglucosan and K{sup +} increased significantly during the biomass burning episode. • The firework episode was characterized by high concentrations of K{sup +}. • WSOC and oxalate exhibited secondary nature during both summer and winter. • High humidity can significantly enhance the formation of WSOC in winter. -- This study suggests the benefits of investigating aerosol composition separately during episode and non-episode periods, and introducing organic tracers to the speciation measurements of PM{sub 2.5}.}
doi = {10.1016/J.ENVPOL.2013.10.037}
journal = []
volume = {185}
journal type = {AC}
place = {United Kingdom}
year = {2014}
month = {Feb}
}
title = {The characteristics of Beijing aerosol during two distinct episodes: Impacts of biomass burning and fireworks}
author = {Cheng, Yuan, Engling, Guenter, He, Ke-bin, State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing (China)], Duan, Feng-kui, Du, Zhen-yu, Ma, Yong-liang, Liang, Lin-lin, Lu, Zi-feng, Liu, Jiu-meng, Zheng, Mei, and Weber, Rodney J.}
abstractNote = {The chemical composition of Beijing aerosol was measured during summer and winter. Two distinct episodes were identified. Water-soluble potassium (K{sup +}) increased significantly during the firework episode in winter with an episode to non-episode ratio of 4.97, whereas the biomass burning (BB) episode in summer was characterized by high episode to non-episode ratios of levoglucosan (6.38) and K{sup +} (6.90). The BB and firework episodes had only a minor influence on the water-soluble OC (organic carbon) to OC ratio. Based on separate investigations of episode and non-episode periods, it was found that: (i) sulfate correlated strongly with both relative humidity and nitrate during the typical winter period presumably indicating the importance of the aqueous-phase oxidation of sulfur dioxide by nitrogen dioxide, (ii) oxalate and WSOC during both winter and summer in Beijing were mainly due to secondary formation, and (iii) high humidity can significantly enhance the formation potential of WSOC in winter. -- Highlights: • Two episodes were identified based on the chemical composition of Beijing aerosol. • Levoglucosan and K{sup +} increased significantly during the biomass burning episode. • The firework episode was characterized by high concentrations of K{sup +}. • WSOC and oxalate exhibited secondary nature during both summer and winter. • High humidity can significantly enhance the formation of WSOC in winter. -- This study suggests the benefits of investigating aerosol composition separately during episode and non-episode periods, and introducing organic tracers to the speciation measurements of PM{sub 2.5}.}
doi = {10.1016/J.ENVPOL.2013.10.037}
journal = []
volume = {185}
journal type = {AC}
place = {United Kingdom}
year = {2014}
month = {Feb}
}