Impact of meteorology and energy structure on solvent extractable   organic compounds of PM2.5 in Beijing, China

doi:10.1016/j.chemosphere.2005.0:1.067

CORC > 北京大学 > 工学院

	Impact of meteorology and energy structure on solvent extractable organic compounds of PM2.5 in Beijing, China
	Feng, JL ; Chan, CK ; Fang, M ; Hu, M ; He, LY ; Tang, XY
刊名	chemosphere
	2005
关键词	aerosol PM2.5 solvent extractable organic compound GC-MS Beijing China POLYCYCLIC AROMATIC-HYDROCARBONS ATMOSPHERIC PARTICULATE POLLUTANTS HONG-KONG SIZE DISTRIBUTIONS SEASONAL-VARIATION MOLECULAR MARKER NORTHERN CHINA AIR-POLLUTION UNITED-STATES AMBIENT AIR
DOI	10.1016/j.chemosphere.2005.0:1.067
英文摘要	Twenty-eight PM2.5 samples collected in Summer (July 2002) and Winter (November 2002) at two sites in Beijing, China were analyzed using GC/MS to investigate the impact of meteorology and coal burning on the solvent extractable organic compounds (SEOC). The characteristics and abundance of the n-alkanes, polycyclic aromatic hydrocarbons (PAHs), n-fatty acids and n-alkanols were determined. Source identification was made using organic species as molecular markers. Semi-volatile compounds of alkanes and PAHs had much higher concentrations in winter than summer because of the large difference in the temperature between the seasons. Plant wax emission was a major contributor to n-alkanes in summer, but fossil fuel residue was a major source (>80%) in winter. The seasonal differences in the distribution of pentacyclic triterpanes clearly shows the impact of coal burning for space heating in winter. The yield of PAHs in winter (148 ng m(-3) at the urban site and 277 ng m(-3) at the suburban site) was six to eight times higher than that in summer and was found to be mainly from coal burning. Higher pollutant concentrations were measured at the suburban site than the urban site in winter due to the rapid expansion of the city limit and the relocation of factories from urban to suburban areas over the last two decades. (C) 2005 Elsevier Ltd. All rights reserved.; Environmental Sciences; SCI(E); EI; 0; ARTICLE; 5; 623-632; 61
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/253732]
专题	工学院
推荐引用方式 GB/T 7714	Feng, JL,Chan, CK,Fang, M,et al. Impact of meteorology and energy structure on solvent extractable organic compounds of PM2.5 in Beijing, China[J]. chemosphere,2005.
APA	Feng, JL,Chan, CK,Fang, M,Hu, M,He, LY,&Tang, XY.(2005).Impact of meteorology and energy structure on solvent extractable organic compounds of PM2.5 in Beijing, China.chemosphere.
MLA	Feng, JL,et al."Impact of meteorology and energy structure on solvent extractable organic compounds of PM2.5 in Beijing, China".chemosphere (2005).