Fossil and Non-fossil Fuel Sources of Organic and Elemental Carbonaceous Aerosol in Beijing, Shanghai, and Guangzhou: Seasonal Carbon Source Variation

Liu, Di; Vonwiller, Matthias; Li, Jun; Liu, Junwen; Szidat, Sönke; Zhang, Yanlin; Tian, Chongguo; Chen, Yinjun; Cheng, Zhineng; Zhong, Guangcai; Fu, Pingqing; Zhang, Gan (2020). Fossil and Non-fossil Fuel Sources of Organic and Elemental Carbonaceous Aerosol in Beijing, Shanghai, and Guangzhou: Seasonal Carbon Source Variation. Aerosol and Air Quality Research, 20(11), pp. 2495-2506. Taiwan Association for Aerosol Research 10.4209/aaqr.2019.12.0642

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We measured the radiocarbon isotope signals in various fractions of carbonaceous aerosols sampled across four seasons (Oct 2013–Jul 2014) in three megacities of China, viz., Beijing, Shanghai, and Guangzhou. The contributions of fossil fuel (FF) and non-fossil fuel (NF) to the carbonaceous aerosol were estimated based on the radiocarbon content in the organic carbon (OC), water-soluble organic carbon (WSOC), water-insoluble organic carbon (WIOC), and elemental carbon (EC). Although NF generated the primary share (> 55%) during autumn in all of the cities, the seasonal contributions of the sources differed by location during the rest of the year. During winter, FF emissions constituted the majority of the carbonaceous pollution (64%) in Beijing, probably as a result of increased coal combustion for heating. On average, the EC, WSOC, and WIOC generated by FF composed ~10%, 35%, and 19% of the total carbon (TC). Overall, NF was identified as the largest source of carbonaceous aerosol in Guangzhou (63%), whereas FF was the largest source, contributing slightly more than NF, in Shanghai (54%). During spring and summer, FF played a greater role than NF in Beijing (~55%) and Guangzhou (~63%); additionally, based on our limited number of samples, it contributed 71% in Shanghai during the latter season, with a significant portion due to fuel combustion (i.e., industrial, vehicular, fishing-boat, and large-vessel emissions).

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Vonwiller, Matthias and Szidat, Sönke

Subjects:

500 Science > 540 Chemistry

ISSN:

1680-8584

Publisher:

Taiwan Association for Aerosol Research

Language:

English

Submitter:

Sönke Szidat

Date Deposited:

18 Nov 2020 12:21

Last Modified:

18 Nov 2020 12:21

Publisher DOI:

10.4209/aaqr.2019.12.0642

BORIS DOI:

10.7892/boris.148088

URI:

https://boris.unibe.ch/id/eprint/148088

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