UM
Chemical characteristics of brown carbon in atmospheric particles at a suburban site near Guangzhou, China
Qin, Yi Ming1,8,9; Tan, Hao Bo2; Li, Yong Jie3; Li, Zhu Jie2,4; Schurman, Misha I.5,10; Liu, Li2,6; Wu, Cheng7; Chan, Chak K.1,9,10
2018-11-19
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
Volume18Issue:22Pages:16409-16418
AbstractLight-absorbing organic carbon (or brown carbon, BrC) in atmospheric particles has received much attention for its potential role in global radiative forcing. While a number of field measurement campaigns have differentiated light absorption by black carbon (BC) and BrC, the chemical characteristics of BrC are not well understood. In this study, we present co-located real-time light absorption and chemical composition measurements of atmospheric particles to explore the relationship between the chemical and optical characteristics of BrC at a suburban site downwind of Guangzhou, China, from November to December 2014. BrC and BC contributions to light absorption were estimated using measurements from a seven-wavelength aethalometer, while the chemical composition of non-refractory PM1 was measured with a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). Using the absorption Angstrom exponent (AAE) method, we estimated that BrC contributed 23.6% to the total aerosol absorption at 370 nm, 18.1% at 470 nm, 10.7% at 520 nm, 10.7% at 590 nm, and 10.5% at 660 nm. Biomass burning organic aerosol (BBOA) has the highest mass absorption coefficient among sources of organic aerosols. Its contribution to total brown carbon absorption coefficient decreased but that of low-volatility oxygenated organic aerosol (LVOOA) increased with increasing wavelength, suggesting the need for wavelength-dependent light absorption analysis for BrC in association with its chemical makeup. Clear correlations of N-containing ion fragments with absorption coefficient were observed. These correlations also depended on their degrees of unsaturation/cyclization and oxygenation. While the current study relates light absorption by BrC to ion fragments, more detailed chemical characterization is warranted to constrain this relationship.
DOI10.5194/acp-18-16409-2018
URLView the original
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000450425400005
PublisherCOPERNICUS GESELLSCHAFT MBH
Fulltext Access
Citation statistics
Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Hong Kong, Peoples R China;
2.China Meteorol Adm, Inst Trop & Marine Meteorol, Key Lab Reg Numer Weather Predict, Guangzhou, Guangdong, Peoples R China;
3.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau, Peoples R China;
4.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing, Jiangsu, Peoples R China;
5.Zephyr Res Consultants, Leadville, CO USA;
6.Sun Yat Sen Univ, Dept Atmospher Sci, Guangzhou, Guangdong, Peoples R China;
7.Jinan Univ, Inst Mass Spectrometer & Atmospher Environm, Guangzhou, Guangdong, Peoples R China;
8.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA;
9.Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Hong Kong, Hong Kong, Peoples R China;
10.Hong Kong Univ Sci & Technol, Div Environm, Hong Kong, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Qin, Yi Ming,Tan, Hao Bo,Li, Yong Jie,et al. Chemical characteristics of brown carbon in atmospheric particles at a suburban site near Guangzhou, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(22):16409-16418.
APA Qin, Yi Ming.,Tan, Hao Bo.,Li, Yong Jie.,Li, Zhu Jie.,Schurman, Misha I..,...&Chan, Chak K..(2018).Chemical characteristics of brown carbon in atmospheric particles at a suburban site near Guangzhou, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(22),16409-16418.
MLA Qin, Yi Ming,et al."Chemical characteristics of brown carbon in atmospheric particles at a suburban site near Guangzhou, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.22(2018):16409-16418.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Qin, Yi Ming]'s Articles
[Tan, Hao Bo]'s Articles
[Li, Yong Jie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Qin, Yi Ming]'s Articles
[Tan, Hao Bo]'s Articles
[Li, Yong Jie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Qin, Yi Ming]'s Articles
[Tan, Hao Bo]'s Articles
[Li, Yong Jie]'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.