Biomass burning contribution to Beijing aerosol

doi:10.5194/acp-13-7765-2013

CORC > 北京大学 > 环境科学与工程学院

	Biomass burning contribution to Beijing aerosol
	Cheng, Y. ; Engling, G. ; He, K.B. ; Duan, F.K. ; Ma, Y.L. ; Du, Z.Y. ; Liu, J.M. ; Zheng, M. ; Weber, R. J.
刊名	atmospheric chemistry and physics
	2013
关键词	FINE-PARTICLE EMISSIONS POSITIVE MATRIX FACTORIZATION PULSED-AMPEROMETRIC DETECTION WOOD STOVE COMBUSTION SOURCE APPORTIONMENT CHEMICAL-CHARACTERIZATION ORGANIC-COMPOUNDS UNITED-STATES FIREPLACE COMBUSTION PARTICULATE MATTER
DOI	10.5194/acp-13-7765-2013
英文摘要	Biomass burning, the largest global source of elemental carbon (EC) and primary organic carbon (OC), is strongly associated with many subjects of great scientific concern, such as secondary organic aerosol and brown carbon which exert important effects on the environment and on climate in particular. This study investigated the relationships between levoglucosan and other biomass burning tracers (i.e., water soluble potassium and mannosan) based on both ambient samples collected in Beijing and source samples. Compared with North America and Europe, Beijing was characterized by high ambient levoglucosan concentrations and low winter to summer ratios of levoglucosan, indicating significant impact of biomass burning activities throughout the year in Beijing. Comparison of levoglucosan and water soluble potassium (K+) levels suggested that it was acceptable to use K+ as a biomass burning tracer during summer in Beijing, while the contribution of fireworks to K+ could be significant during winter. Moreover, the levoglucosan to K+ ratio was found to be lower during the typical summer period (0.21 +/- 0.16) compared with the typical winter period (0.51 +/- 0.15). Levoglucosan correlated strongly with mannosan (R-2 = 0.97) throughout the winter and the levoglucosan to mannosan ratio averaged 9.49 +/- 1.63, whereas levoglucosan and mannosan exhibited relatively weak correlation (R-2 = 0.73) during the typical summer period when the levoglucosan to mannosan ratio averaged 12.65 +/- 3.38. Results from positive matrix factorization (PMF) model analysis showed that about 50% of the OC and EC in Beijing were associated with biomass burning processes. In addition, a new source identification method was developed based on the comparison of the levoglucosan to K+ ratio and the levoglucosan to mannosan ratio among different types of biomass. Using this method, the major source of biomass burning aerosol in Beijing was suggested to be the combustion of crop residuals, while the contribution from softwood burning was also non-negligible, especially in winter.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000323103900031&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Meteorology & Atmospheric Sciences; SCI(E); 91; ARTICLE; 15; 7765-7781; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/392269]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Cheng, Y.,Engling, G.,He, K.B.,et al. Biomass burning contribution to Beijing aerosol[J]. atmospheric chemistry and physics,2013.
APA	Cheng, Y..,Engling, G..,He, K.B..,Duan, F.K..,Ma, Y.L..,...&Weber, R. J..(2013).Biomass burning contribution to Beijing aerosol.atmospheric chemistry and physics.
MLA	Cheng, Y.,et al."Biomass burning contribution to Beijing aerosol".atmospheric chemistry and physics (2013).