Jiang, Hongxing1,2,3,4,5; Li, Jun1,2,3,4; Sun, Rong1,2,3,4,5; Liu, Guoqing6; Tian, Chongguo7
; Tang, Jiao1,2,3,4; Cheng, Zhineng1,2,3,4; Zhu, Sanyuan1,2,3,4; Zhong, Guangcai1,2,3,4; Ding, Xiang1,2,3,4; Zhang, Gan1,2,3,4发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
2021-05-16
卷号126期号:9页码:17
关键词atmospheric dissolved organic matterbiomass burningbrown carbonradionuclide tracersregional transportSource apportionment
DOI10.1029/2021JD034616
通讯作者Li, Jun(junli@gig.ac.cn)
英文摘要The isotope tracer technique plays a key role in identifying the sources and atmospheric processes affecting pollution. The sources of brown carbon (BrC) at Guangzhou during 2017-2018 were characterized by positive matrix factorization with radiocarbon isotope constraints and multiple linear regression analysis. The primary emission factors of fossil fuel combustion (FF) and biomass burning (BB) accounted for 34% and 27% of dissolved BrC absorption at lambda = 365 nm (Abs(365)), respectively. The total mean light absorption contributed by secondary sources was 39%. The FF-origin Abs(365) changed insignificantly throughout the year and was dominant in the summer monsoon period, whereas the Abs(365) from BB and secondary nitrate formation increased and contributed larger fractions during the winter monsoon period. Transported BrC was estimated using an index of Be-7/(Be-7 + n(210)Pb). Higher values were generally accompanied by lower Abs(365), whereas lower values were associated with higher Abs(365), indicating that BrC absorption of aerosols transported from the upper-atmosphere is lower than that of aerosols transported near the surface. Based on the positive correlations between Pb-210 and Abs(365) and non-fossil dissolved organic carbon in the winter monsoon period, we estimated that the contribution of invasive BrC (include ground and upper-atmosphere level) to total absorption during the period of elevated BrC was similar to 50%. The transported BrC was likely related to BB organic aerosols and secondary nitrate formation processes. This study supports radionuclides as a novel method for characterizing the sources and transport of BrC that can be applied in future atmospheric research.
资助机构Natural Science Foundation of China (NSFC); State Key Laboratory of Organic Geochemistry, GIGCAS; Guangdong Foundation for Program of Science and Technology Research
收录类别SCI
语种英语
关键词[WOS]SECONDARY ORGANIC AEROSOL; POSITIVE MATRIX FACTORIZATION; LIGHT-ABSORPTION CHARACTERISTICS; PARTICULATE MATTER EMISSIONS; REGIONAL BACKGROUND SITE; HUMIC-LIKE SUBSTANCES; PEARL RIVER DELTA; OPTICAL-PROPERTIES; SOURCE APPORTIONMENT; CHEMICAL CHARACTERISTICS
研究领域[WOS]Meteorology & Atmospheric Sciences
WOS记录号WOS:000656152800012
引用统计被引频次：2[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29368
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
通讯作者Li, Jun作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect & Resourc, Guangzhou, Peoples R China
3.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Poll, Guangzhou, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
6.Shenzhen Univ, Dept Nucl Sci & Technol, Coll Phys & Engn, Shenzhen, Peoples R China
7.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China
推荐引用方式
GB/T 7714Jiang, Hongxing,Li, Jun,Sun, Rong,et al. Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2021,126(9):17.
APAJiang, Hongxing.,Li, Jun.,Sun, Rong.,Liu, Guoqing.,Tian, Chongguo.,...&Zhang, Gan.(2021).Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(9),17.
MLAJiang, Hongxing,et al."Determining the Sources and Transport of Brown Carbon Using Radionuclide Tracers and Modeling".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.9(2021):17.
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