Source apportionment of PM2.5 in Beijing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Kebin He
  • Qiang Zhang
  • Yongliang Ma
  • Fumo Yang
  • Steven Cadle
  • Tai Chan
  • Patricia Mulawa
  • Xiaohong Yao

Detail(s)

Original languageEnglish
Pages (from-to)677-678
Journal / PublicationACS Division of Fuel Chemistry, Preprints
Volume47
Issue number2
Publication statusPublished - Aug 2002
Externally publishedYes

Conference

Title224th ACS National Meeting
PlaceUnited States
CityBoston
Period18 - 22 August 2002

Abstract

One week integrated PM2.5 samples were collected continuously at two sampling sites in Beijing: one at Chegongzhuang in a downtown area, and the other one on the campus of Tsinghua University in a residential area. The source contribution of ambient PM2.5 by enrichment factor model and receptor model was studied. The enrichment factors of Na, Mg, Al, Si, Ca, and Fe at the two sites were all <10 due to the contribution of biomass fuel combustion around Beijing. The other group was pollutant element including S, Cl, Cu, Zn, Se, Br, and Pb, The enrichment factors of these three elements were > 10, indicating that they were closely related with human activities. The enrichment factors of S, Zn, Se, Br, and Pb were even over 500. Sulfur mainly came from coal smoke and the conversion of SO2 to sulfate. As Beijing now uses unleaded gasoline, lead may come from the coal and vegetation combustion. High enrichment level of these elements showed that the anthropogenic PM2.5 in Beijing was caused by the combustion of fossil fuel. Coal boiler (residential boiler and industrial boiler) was the largest contributor of PM2.5 at both sites, followed by secondary ammonium, road dust, vehicle exhaust and cement dust.

Citation Format(s)

Source apportionment of PM2.5 in Beijing. / He, Kebin; Zhang, Qiang; Ma, Yongliang; Yang, Fumo; Cadle, Steven; Chan, Tai; Mulawa, Patricia; Chan, Chak K.; Yao, Xiaohong.

In: ACS Division of Fuel Chemistry, Preprints, Vol. 47, No. 2, 08.2002, p. 677-678.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal