Stable carbon isotopes in aerosols from Chinese cities: Influence of fossil fuels

Stable carbon isotope ratios were determined for the OC and EC fractions of PM 2.5 collected from 14 Chinese cities in January and June/July of 2003. The period-averaged isotope values ( δ 13C) varied from −26.90‰ to −23.08‰ for OC and −26.63‰ to −23.27‰ for EC. A strong correlation ( R 2 = 0.70, p...

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Bibliographic Details
Published in:Atmospheric environment (1994) 2011-02, Vol.45 (6), p.1359-1363
Main Authors: Cao, Jun-ji, Chow, Judith C., Tao, Jun, Lee, Shun-cheng, Watson, John G., Ho, Kin-fai, Wang, Ge-hui, Zhu, Chong-shu, Han, Yong-ming
Format: Article
Language:English
Subjects:
aerosols
air pollution
Applied sciences
atmospheric chemistry
Atmospheric pollution
Carbon isotope
China
cities
coal
combustion
Elemental carbon
emissions
Exact sciences and technology
Organic carbon
Pollution
stable isotopes
summer
winter
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Summary:Stable carbon isotope ratios were determined for the OC and EC fractions of PM 2.5 collected from 14 Chinese cities in January and June/July of 2003. The period-averaged isotope values ( δ 13C) varied from −26.90‰ to −23.08‰ for OC and −26.63‰ to −23.27‰ for EC. A strong correlation ( R 2 = 0.70, p < 0.0001) between δ 13C OC and δ 13C EC was found in winter but not summer. Winter vs. summer differences for δ 13C OC and δ 13C EC were greater for the seven northern cities (∼1 to 3‰) than the seven southern cities (
ISSN:1352-2310
1873-2844
DOI:10.1016/j.atmosenv.2010.10.056