Residential Collegefalse
Status已發表Published
Characterization of the light-Absorbing properties, chromophore composition and sources of brown carbon aerosol in Xi'an, northwestern China
Yuan, Wei1,2; Huang, Ru Jin1,3; Yang, Lu1; Guo, Jie1; Chen, Ziyi4; Duan, Jing1,2; Wang, Ting1,2; Ni, Haiyan1; Han, Yongming1; Li, Yongjie5; Chen, Qi6; Chen, Yang7; Hoffmann, Thorsten8; O'Dowd, Colin9
2020-04-30
Source PublicationAtmospheric Chemistry and Physics
ISSN1680-7316
Volume20Issue:8Pages:5129-5144
Abstract

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 Ångström 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 (ĝˆ1/4 70 %) in spring, coal combustion and vehicular emissions are major sources (ĝˆ1/4 70 %) in fall, biomass burning and coal combustion become major sources (ĝˆ1/4 80 %) in winter, and secondary BrC dominates (ĝˆ1/4 60 %) in summer.

.

DOI10.5194/acp-20-5129-2020
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000531565400003
PublisherCOPERNICUS GESELLSCHAFT MBH
Scopus ID2-s2.0-85084637552
Fulltext Access
FWCI3.1087813
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorHuang, Ru Jin
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Xi'an, 710061, China
2.University of Chinese Academy of Sciences, Beijing, 100049, China
3.Institute of Global Environmental Change, Xi'An Jiaotong University, Xi'an, 710049, China
4.Royal School of Mines, South Kensington Campus, Imperial College London, London, Exhibition Road, SW7 3RW, United Kingdom
5.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, 999078, Macao
6.State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
7.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
8.Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University Mainz, Mainz, Duesbergweg 10-14, 55128, Germany
9.School of Physics and Centre for Climate and Air Pollution Studies, Ryan Institute, National University of Ireland Galway, Galway, University Road, H91CF50, Ireland
Recommended Citation
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,Duan, Jing,Wang, Ting,Ni, Haiyan,Han, Yongming,Li, Yongjie,Chen, Qi,Chen, Yang,Hoffmann, Thorsten,&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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yuan, Wei]'s Articles
[Huang, Ru Jin]'s Articles
[Yang, Lu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yuan, Wei]'s Articles
[Huang, Ru Jin]'s Articles
[Yang, Lu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yuan, Wei]'s Articles
[Huang, Ru Jin]'s Articles
[Yang, Lu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.