Optical properties and possible sources of brown carbon in PM2.5 over Xi'an, China

doi:10.1016/j.atmosenv.2016.11.024

GIEC OpenIR > 中国科学院广州能源研究所

	Optical properties and possible sources of brown carbon in PM2.5 over Xi'an, China
	Shen, Zhenxing 1,2; Zhang, Qian 1; Cao, Junji 2; Zhang, Leiming 3; Lei, Yali 1; Huang, Yu 2; Huang, R. -J.2; Gao, Jinjin 1; Zhao, Zhuzi 2; Zhu, Chongshu 2; Yin, Xiuli4 ; Zheng, Chunli 1; Xu, Hongmei 1; Liu, Suixin1
	2017-02-01
发表期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
卷号	150 页码:322-330
摘要	To quantify optical and chemical properties of PM2.5 brown carbon (BrC) in Xi'an, 58 high-volume ambient PM2.5 samples were collected during 2 November 2009 to 13 October 2010. Mass concentrations of chemical components were determined, including water-soluble ions, water-soluble organic carbon, levoglucosan, organic carbon (OC), and element carbon (EC). BrC, as an unidentified and wavelength-dependent organic compound, was also measured from water-soluble carbon (WSOC) at 340 nm using UV-vis spectrometer. The wavelength-dependent absorption coefficient (b(abs)) and mass absorption coefficient (MAC) were much abundant at 340 nm, and the high Absorption Angstrom coefficient (AAC) values were observed around 5.4, corresponding to the existence of BrC in ambient PM2.5, especially in winter. Good correlations (R > 0.60) between b(abs) and biomass burning markers, such as levoglucosan and K+, in winter indicated significant amounts of primary BrC from biomass burning emissions. Secondary organic carbon BrC (SOC-BrC) was more abundant in winter than in summer. SOC-BrC in winter was mainly fresh SOC formed from aqueous phase reactions while in summer, aged SOC from photo-chemical formation. Source profiles of BrC optical parameters were detected, which verified sources of BrC from biomass burning and coal burning emissions in areas surrounding Xi'an. The rapidly decreasing b(abs-340nm) values from biomass burning smoldering to straw pellet burning suggested that burning straw pellet instead of burning straw directly is an effective measure for reducing BrC emissions. (C) 2016 Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	Brown Carbon Absorption Coefficient Mass Absorption Coefficient Secondary Organic Carbon
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI	10.1016/j.atmosenv.2016.11.024
研究领域[WOS]	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
关键词[WOS]	MASS ABSORPTION EFFICIENCY ; AEROSOL LIGHT-ABSORPTION ; FINE PARTICULATE MATTER ; ORGANIC-CARBON ; BLACK CARBON ; SEASONAL-VARIATIONS ; BIOMASS COMBUSTION ; ELEMENTAL CARBON ; NORTHWEST CHINA ; SOLAR-RADIATION
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(41573101) ; Natural Science Foundation of Shaanxi Province, China(2016ZDJC-22) ; Fundamental Research Funding for Central Universities in China(xkjc2015002) ; Key Lab of Aerosol Chemistry & Physics of the Chinese Academy of Sciences(KLACP201501)
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000392770700031
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：94[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/14028
专题	中国科学院广州能源研究所
通讯作者	Shen, Zhenxing
作者单位	1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Peoples R China 3.Environm & Climate Change Canada, Sci & Technol Branch, Air Qual Res Div, Toronto, ON, Canada 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Shen, Zhenxing,Zhang, Qian,Cao, Junji,et al. Optical properties and possible sources of brown carbon in PM2.5 over Xi'an, China[J]. ATMOSPHERIC ENVIRONMENT,2017,150:322-330.
APA	Shen, Zhenxing.,Zhang, Qian.,Cao, Junji.,Zhang, Leiming.,Lei, Yali.,...&Liu, Suixin.(2017).Optical properties and possible sources of brown carbon in PM2.5 over Xi'an, China.ATMOSPHERIC ENVIRONMENT,150,322-330.
MLA	Shen, Zhenxing,et al."Optical properties and possible sources of brown carbon in PM2.5 over Xi'an, China".ATMOSPHERIC ENVIRONMENT 150(2017):322-330.