Characteristics of size-segregated carbonaceous aerosols in the Beijing-Tianjin-Hebei region
Author:
- 4 April 2016
- journal article
- research article
- Published by Springer Nature in Environmental Science and Pollution Research
- Vol. 23 (14) , 13918-13930
Abstract
Mass concentrations of organic carbon (OC) and elemental carbon (EC) in size-resolved aerosols were investigated at four sites (three cities and one country) in the Beijing-Tianjin-Hebei region from September 2009 to August 2011. The size distributions of OC and EC presented large evolutions among rural and urban sites, and among four seasons, with highest peaks of OC and EC in fine mode in urban areas during winter. Geometric mean diameters (GMDs) of OC and EC in fine particles at urban sites during winter were lower than those at rural site mainly due to effects of fine particle coagulation and organic compound repartitioning. Fossil fuel emissions were a dominant source of OC and EC in urban areas, while biomass burning was a major source of OC and EC at rural site. Trajectory clustering and CWT analysis showed that regional transport was an important contributor to OC and EC in Beijing.Keywords
Funding Information
- CAS Strategic Priority Research Program (XDA05100100)
- Science and Technology Project of Beijing (D0904 0903670902)
- Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW-Q02-03)
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