Biomass burning organic aerosols significantly influence the light absorption properties of polarity-dependent organic compounds in the Pearl River Delta Region, China

doi:10.1016/j.envint.2020.106079

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	Biomass burning organic aerosols significantly influence the light absorption properties of polarity-dependent organic compounds in the Pearl River Delta Region, China
	Jiang, Hongxing 1,4,5; Li, Jun 1,4; Chen, Duohong 3; Tang, Jiao 1,4,5; Cheng, Zhineng 1,4; Mo, Yangzhi 1,4; Su, Tao 1,4,5; Tian, Chongguo 2; Jiang, Bing 1,4; Liao, Yuhong 1,4
刊名	ENVIRONMENT INTERNATIONAL
	2020-11-01
卷号	144 页码:9
关键词	Brown carbon Polar carbon fractions Biomass burning organic aerosol Pearl River Delta Region Molecular composition
ISSN号	0160-4120
DOI	10.1016/j.envint.2020.106079
通讯作者	Li, Jun(junli@gig.ac.cn) ; Chen, Duohong(chenduohong@139.com)
英文摘要	Atmospheric brown carbon (BrC) is an important constituent of light-absorbing organic aerosols with many unclear issues. Here, the light-absorption properties of BrC with different polarity characteristics at a regional site of Pearl River Delta Region during 2016-2017, influenced by sources and molecular compositions, were revealed using radiocarbon analysis and Fourier transform ion cyclotron resonance mass spectrometry. Humic-like substance (HULIS), middle polar (MP), and low polar (LP) carbon fractions constitute 46 +/- 17%, 30 +/- 7%, and 7 +/- 3% of total absorption coefficient from bulk extracts, respectively. Our results show that the absorption proportions of HULIS and MP to the total BrC absorption are higher than their mass proportions to organic carbon mass, indicating that HULIS and MP are the main light-absorbing components in water-soluble and water-insoluble organic carbon fractions, respectively. With decreases in non-fossil HULIS, MP, and LP carbon fractions (66 +/- 2%, 52 +/- 2%, and 36 +/- 3%, respectively), the abundances of unsaturated compounds and mass absorption efficiency at 365 nm of three fractions decreased synchronously. Increases in both nonfossil carbon and levoglucosan in winter imply that the enhanced light-absorption could be attributed to elevated levels of biomass burning organic aerosols (BBOA), which increases the number of light-absorbing nitrogencontaining compounds. Moreover, the major type of potential BrC in HULIS and MP carbon fractions are oxidized BBOA, but the potential BrC chromophores in LP are mainly associated with primary BBOA. This study reveals that biomass burning has adverse effects on radiative forcing and air quality, and probably indicates the significant influences of atmospheric oxidation reactions on the forms of chromophores.
资助项目	National Key R&D Program of China[2017YFC0212000] ; National Natural Science Foundation of China (NSFC)[41773120] ; State Key Laboratory of Organic Geochemistry, GIGCAS[SKLOG 2016-A05] ; State Key Laboratory of Organic Geochemistry, GIGCAS[SKLOG 20205] ; Guangdong Foundation for Program of Science and Technology Research[2017B030314057]
WOS关键词	HUMIC-LIKE SUBSTANCES ; PARTICULATE BROWN CARBON ; OPTICAL-PROPERTIES ; MOLECULAR CHARACTERIZATION ; BLACK CARBON ; CHEMICAL CHARACTERISTICS ; SOURCE APPORTIONMENT ; ABSORBING PROPERTIES ; APEC SUMMIT ; MASS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000580630100078
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; State Key Laboratory of Organic Geochemistry, GIGCAS ; Guangdong Foundation for Program of Science and Technology Research
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/28326]
专题	烟台海岸带研究所_近岸生态与环境实验室烟台海岸带研究所_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; Chen, Duohong
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 3.Guangdong Environm Monitoring Ctr, Guangzhou 510308, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect & Resourc, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Hongxing,Li, Jun,Chen, Duohong,et al. Biomass burning organic aerosols significantly influence the light absorption properties of polarity-dependent organic compounds in the Pearl River Delta Region, China[J]. ENVIRONMENT INTERNATIONAL,2020,144:9.
APA	Jiang, Hongxing.,Li, Jun.,Chen, Duohong.,Tang, Jiao.,Cheng, Zhineng.,...&Zhang, Gan.(2020).Biomass burning organic aerosols significantly influence the light absorption properties of polarity-dependent organic compounds in the Pearl River Delta Region, China.ENVIRONMENT INTERNATIONAL,144,9.
MLA	Jiang, Hongxing,et al."Biomass burning organic aerosols significantly influence the light absorption properties of polarity-dependent organic compounds in the Pearl River Delta Region, China".ENVIRONMENT INTERNATIONAL 144(2020):9.