Isotope characteristics of carbonaceous aerosols in urban atmosphere of China

Junji Cao, Chong Shu Zhu, Shuncheng Lee, Kinfai Ho, Judith C. Chow, John G. Watson

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Stable carbon isotopes were characterized for PM2.5organic carbon (OC) and elemental carbon (EC) at fourteen selected cities in China. The isotopic composition of OC varied averagely between 26.9 and -23.08% and EC varied between -26.63% and 23.27%. Strong relationship of stable carbon isotopic composition (δ13C) in OC and EC (R2= 0.70, p < 0.0001) was found for winter samples and poor relationship (R2= 0.1, p = 0.072) was found for summer samples in 14 cities. The winter to summer differences of δ13COCand δ13CECwere large in seven north cities but there were relative small in seven south cities. Compared with the isotopic signature of major emission sources, the isotopic distributions in 14 cities implied the major sources of carbonaceous aerosol were from the combustion of fossil fuels including coal, gasoline, and diesel. The urban air in 7 cities in north China was influenced by coal combustion during winter. This is an abstract of a paper presented at the 103rd Air and Waste Management Association Annual Conference and Exhibition (Calgary, Alberta, Canada 6/22-25/2010).
Original languageEnglish
Title of host publication103rd Air and Waste Management Association Annual Conference and Exhibition 2010 - Manuscripts/Extended Abstracts
Pages567-579
Number of pages13
Volume1
Publication statusPublished - 1 Dec 2010
Event103rd Air and Waste Management Association Annual Conference and Exhibition 2010 - Calgary, AB, Canada
Duration: 22 Jun 201025 Jun 2010

Conference

Conference103rd Air and Waste Management Association Annual Conference and Exhibition 2010
Country/TerritoryCanada
CityCalgary, AB
Period22/06/1025/06/10

ASJC Scopus subject areas

  • Environmental Science(all)
  • Energy(all)

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