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A Review of Aerosol Chemical Composition and Sources in Representative Regions of China during Wintertime

1
School of Humanities, Economics and Law, Northwestern Polytechnical University, Xi’an 710129, China
2
College of Management, Shenzhen University, Shenzhen 518060, China
3
Key Lab of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710061, China
4
CAS Center for Excellence in Quaternary Science and Global Change, Xi’an 710061, China
5
School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
6
School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
7
Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland
*
Authors to whom correspondence should be addressed.
Atmosphere 2019, 10(5), 277; https://doi.org/10.3390/atmos10050277
Received: 31 March 2019 / Revised: 30 April 2019 / Accepted: 13 May 2019 / Published: 16 May 2019
(This article belongs to the Section Aerosols)
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Abstract

Comparisons of aerosol composition and sources in different cities or regions are rather limited, yet important for an in-depth understanding of the spatial diversity of aerosol pollution in China. In this study, the data originating from 25 different winter aerosol mass spectrometer (AMS)/aerosol chemical speciation monitor (ACSM) studies were used to provide spatial coverage of the Beijing-Tianjin-Hebei (BTH), Guanzhong (GZ), Yangtze River Delta (YRD), and Pearl River Delta (PRD) regions. The spatial distribution and diurnal variations in aerosol composition and organic sources were analyzed to investigate the aerosol characteristics in the four regions. It was found that there were differences in the compositions of non-refractory particulate matter across the regions, e.g., more sulfate in the PRD versus more nitrate in the YRD, as well as in the organic sources, e.g., more coal combustion in BTH versus more biomass burning in GZ. The characteristics of the composition of NR-PM are similar when the campaigns were classified according to the winter of different years or the cities of different regions. The diurnal variation of the PRD-sulfate indicated its regional nature, whereas the organics from burning sources in two regions of northern China exhibited local characteristics. Based on these findings, we suggest that strict control policies for coal combustion and biomass burning emissions should be enforced in the BTH and GZ regions, respectively. View Full-Text
Keywords: aerosol composition; organic sources; representative regions; China; wintertime aerosol composition; organic sources; representative regions; China; wintertime
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Wang, Y.; Wang, Q.; Ye, J.; Yan, M.; Qin, Q.; Prévôt, A.S.H.; Cao, J. A Review of Aerosol Chemical Composition and Sources in Representative Regions of China during Wintertime. Atmosphere 2019, 10, 277.

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