Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China

doi:10.1016/j.atmosenv.2004.05.016

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（1985-2004）

	Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China
	Cao, JJ; Lee, SC; Ho, KF; Zou, SC; Fung, K; Li, Y; Watson, JG; Chow, JC
刊名	ATMOSPHERIC ENVIRONMENT
	2004-09
卷号	38 期号:27 页码:4447-4456
关键词	organic carbon elemental carbon urban aerosol Pearl River Delta Region
DOI	10.1016/j.atmosenv.2004.05.016
文献子类	Article
英文摘要	The concentrations of organic carbon (OC) and elemental carbon (EC) in atmospheric particles were investigated at eight sites in four cities (Hong Kong, Guangzhou, Shenzhen and Zhuhai) of the Pearl River Delta Region (PRDR), China, during winter and summer 2002. The comparison of summer and winter results was made in order to investigate spatial and seasonal variations. PM2.5 and PM10 samples were collected on pre-fired quartz filters with mini-volume samplers and analyzed by the thermal optical reflectance (TOR) method following the Interagency Monitoring of PROtected Visual Environments (IMPROVE) protocol. During summer, the average OC and EC concentrations in PM2.5 were 9.2 and 4.1 mug m(-3), while those in PM10 were 12.3 and 5.2 mug m(-3). Carbonaceous aerosol accounted for 38.0% of the PM2.5 and 32.9% of the PM10. The daily average OC, EC, PM2.5 and PM10 concentrations in PRDR were higher in winter than in summer. The average OC/EC ratio was 2.5 for PM2.5 and PM10, suggesting the presence of secondary organic aerosols. The estimated secondary organic carbons in PM2.5 and PM10 were 4.1 and 5.6 mug m(-3), respectively. The OC and EC were found to be correlated in winter (correlation coefficient r = 0.82) and summer (r = 0.64), which implied that motor vehicle sources contributed to the ambient carbonaceous particles. The distribution of eight carbon fractions in OC and EC at eight sites was first reported in ambient samples in Asia, which also indicated that motor vehicle exhaust was the dominant contributor to carbonaceous particles. (C) 2004 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS关键词	DESCRIPTIVE ANALYSIS ; SOURCE PROFILES ; AEROSOL ; PM2.5 ; PARTICLES ; VISIBILITY ; INDUSTRIAL ; IMPROVE ; SCIENCE ; PM(2.5)
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000223121000004
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/11836]
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Cao, JJ,Lee, SC,Ho, KF,et al. Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China[J]. ATMOSPHERIC ENVIRONMENT,2004,38(27):4447-4456.
APA	Cao, JJ.,Lee, SC.,Ho, KF.,Zou, SC.,Fung, K.,...&Chow, JC.(2004).Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China.ATMOSPHERIC ENVIRONMENT,38(27),4447-4456.
MLA	Cao, JJ,et al."Spatial and seasonal variations of atmospheric organic carbon and elemental carbon in Pearl River Delta Region, China".ATMOSPHERIC ENVIRONMENT 38.27(2004):4447-4456.