Characterization of the light-absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China

doi:10.5194/acp-20-5129-2020

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Characterization of the light-absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China
	Yuan, Wei 3,4; Huang, Ru-Jin 2,4; Yang, Lu 4; Guo, Jie 4; Chen, Ziyi 6; Duan, Jing 3,4; Wang, Ting 3,4; Ni, Haiyan 4; Han, Yongming M.4; Li, Yongjie 5
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2020-04-30
卷号	20 期号:8 页码:5129-5144
ISSN号	1680-7316
DOI	10.5194/acp-20-5129-2020
通讯作者	Huang, Ru-Jin(rujin.huang@ieecas.cn)
英文摘要	The impact of brown carbon aerosol (BrC) on the Earth's radiative forcing balance has been widely recognized but remains uncertain, mainly because the relationships among BrC sources, chromophores and optical properties of aerosol are poorly understood. In this work, the light absorption properties and chromophore composition of BrC were investigated for samples collected in Xi'an, northwestern China, from 2015 to 2016. Both absorption Angstrom exponent (AAE) and mass absorption efficiency (MAE) show distinct seasonal differences, which could be attributed to the differences in sources and chromophore composition of BrC. Three groups of light-absorbing organics were found to be important BrC chromophores, including compounds that have multiple absorption peaks at wavelengths > 350 nm (12 polycyclic aromatic hydrocarbons and their derivatives) and compounds that have a single absorption peak at wavelengths < 350 nm (10 nitrophenols and nitrosalicylic acids and 3 methoxyphenols). These measured BrC chromophores show distinct seasonal differences and contribute on average about 1.1 % and 3.3 % of light absorption of methanol-soluble BrC at 365 nm in summer and winter, respectively, about 7 and 5 times higher than the corresponding carbon mass fractions in total organic carbon. The sources of BrC were resolved by positive matrix factorization (PMF) using these chromophores instead of commonly used non-light-absorbing organic markers as model inputs. Our results show that vehicular emissions and secondary formation are major sources of BrC (similar to 70 %) in spring, coal combustion and vehicular emissions are major sources (similar to 70 %) in fall, biomass burning and coal combustion become major sources (similar to 80 %) in winter, and secondary BrC dominates (similar to 60 %) in summer.
资助项目	National Natural Science Foundation of China (NSFC)[41877408] ; National Natural Science Foundation of China (NSFC)[41925015] ; National Natural Science Foundation of China (NSFC)[91644219] ; National Natural Science Foundation of China (NSFC)[41675120] ; Chinese Academy of Sciences[ZDBS-LY-DQC001] ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology (SKLLQG)[SKLLQGTD1801] ; National Key Research and Development Program of China[2017YFC0212701] ; Science and Technology Development Fund, Macau SAR[016/2017/A1] ; University of Macau[MYRG201800006-FST]
WOS关键词	SECONDARY ORGANIC AEROSOL ; POLYCYCLIC AROMATIC-HYDROCARBONS ; PARTICULATE NITRATED PHENOLS ; ATMOSPHERIC FINE PARTICLES ; BIOMASS-BURNING EMISSIONS ; SOURCE APPORTIONMENT ; OPTICAL-PROPERTIES ; ABSORPTION PROPERTIES ; SPATIAL-DISTRIBUTION ; COAL COMBUSTION
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000531565400003
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology (SKLLQG) ; National Key Research and Development Program of China ; Science and Technology Development Fund, Macau SAR ; University of Macau
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13973]
专题	地球环境研究所_粉尘与环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Huang, Ru-Jin
作者单位	1.Natl Univ Ireland Galway, Ryan Inst, Sch Phys, Univ Rd, Galway H91 CF50, Ireland 2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys,Inst Earth Environm, Xian 710061, Peoples R China 5.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa 999078, Macao, Peoples R China 6.Imperial Coll London, Royal Sch Mines, South Kensington Campus,Exhibit Rd, London SW7 3RW, England 7.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China 8.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 9.Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, Duesbergweg 10-14, Mainz 55128, Germany 10.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Air Pollut Studies, Univ Rd, Galway H91 CF50, Ireland
推荐引用方式 GB/T 7714	Yuan, Wei,Huang, Ru-Jin,Yang, Lu,et al. Characterization of the light-absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(8):5129-5144.
APA	Yuan, Wei.,Huang, Ru-Jin.,Yang, Lu.,Guo, Jie.,Chen, Ziyi.,...&O'Dowd, Colin.(2020).Characterization of the light-absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(8),5129-5144.
MLA	Yuan, Wei,et al."Characterization of the light-absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.8(2020):5129-5144.