The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation

doi:10.1016/j.atmosenv.2021.118738

IEECAS OpenIR > 粉尘与环境研究室

	The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation
	Zhan, Bixin 1,2; Zhong, Haobin 3,4,5; Chen, Hui 2; Chen, Yunqian 2; Li, Xiang 2; Wang, Lin 2; Wang, Xinke 6; Mu, Yujing 7; Huang, Ru-Jin 3,4; George, Christian 6; Chen, Jianmin 1,2,8
通讯作者	Chen, Hui(hui_chen@fudan.edu.cn) ; Chen, Jianmin(jmchen@fudan.edu.cn)
	2021-12-01
发表期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
卷号	266 页码:9
摘要	The formation mechanism and evolution process of secondary organic aerosol (SOA) remain poorly understood due to measurement uncertainties and chemical complexities. Here, we present the characterization of non-refractory fine particles (NR-PM2.5) analyzed by means of a time-of-flight ACSM (ToF-ACSM) at a rural site in the North China Plain during winter. Our results show that air quality in rural areas was heavily polluted by primary organic aerosols (POA), which accounted for 83% of total organic aerosol (OA). The oxygenated organic aerosols (OOA) were mainly generated from local emissions. As pieces of evidence, firstly, less-oxidized OOA (LO-OOA) had good correlations with primary species like biomass burning OA (BBOA) (R2 = 0.54), EC (R2 = 0.46), and chloride (R2 = 0.46), implying LO-OOA was formed with the POA emission processes; secondly, there was a significant increase in OOA concentration after sunrise, indicating a lot of local generation during the daytime; thirdly, the potential source region of OOA was restricted in that of POA, implying that OOAs were converted from where primary emission exists. The formation processes of LO-OOA and more-oxidized OOA (MO-OOA) are different. Aqueous-phase chemistry had a dominant effect on the formation of LO-OOA due to the better correlation between aerosol liquid water content (ALWC) with LO-OOA (R2 = 0.54) than MO-OOA (R2 = 0.15). In comparison, both aqueous -phase and photochemical processes acted on the MO-OOA formation, when odd oxygen (Ox = O3+NO2) was low (Ox < 35 ppb), MO-OOA concentration increased with the increment of ALWC. However, at high Ox level (Ox > 35 ppb), photochemical oxidation played an essential role in MO-OOA formation.
关键词	ToF-ACSM The north China Plain Fine particles Real-time measurements Mass-spectrometry Organic aerosol Chemical composition
DOI	10.1016/j.atmosenv.2021.118738
关键词[WOS]	NORTH CHINA PLAIN ; ATMOSPHERIC FINE PARTICLES ; SOURCE APPORTIONMENT ; CHEMICAL-COMPOSITION ; PARTICULATE MATTER ; SECONDARY FORMATION ; MULTILINEAR ENGINE ; SUBMICRON AEROSOLS ; COAL COMBUSTION ; HAZE POLLUTION
收录类别	SCI ; SCI
语种	英语
资助项目	Ministry of Science and Technology of China, China[2016YFC0202700] ; National Natural Science Founda-tion of China, China[91743202] ; National Natural Science Founda-tion of China, China[41805091] ; National Natural Science Founda-tion of China, China[21806020] ; National research program for key issues in air pollution control, China[DQGG0103] ; National research program for key issues in air pollution control, China[DQGG0102] ; Marie Skodowska-Curie Actions, European Union[690958-MARSU-RISE-2015]
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
项目资助者	Ministry of Science and Technology of China, China ; National Natural Science Founda-tion of China, China ; National research program for key issues in air pollution control, China ; Marie Skodowska-Curie Actions, European Union
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000715052900002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17199
专题	粉尘与环境研究室
通讯作者	Chen, Hui; Chen, Jianmin
作者单位	1.Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai 200438, Peoples R China 2.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200438, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, State Key Lab Loess & Quaternary Geol SKLLQG, Inst Earth Environm, Xian 710061, Peoples R China 4.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Univ Lyon, Univ Claude Bernard Lyon 1, IRCELYON, CNRS, F-69626 Villeurbanne, France 7.Univ Chinese Acad Sci, Inst Ecoenvironm, Beijing 100080, Peoples R China 8.Fudan Univ, IRDR Int Ctr Excellence Risk Interconnect & Gover, Inst Atmospher Sci, Shanghai 200438, Peoples R China
推荐引用方式 GB/T 7714	Zhan, Bixin,Zhong, Haobin,Chen, Hui,et al. The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation[J]. ATMOSPHERIC ENVIRONMENT,2021,266:9.
APA	Zhan, Bixin.,Zhong, Haobin.,Chen, Hui.,Chen, Yunqian.,Li, Xiang.,...&Chen, Jianmin.(2021).The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation.ATMOSPHERIC ENVIRONMENT,266,9.
MLA	Zhan, Bixin,et al."The roles of aqueous-phase chemistry and photochemical oxidation in oxygenated organic aerosols formation".ATMOSPHERIC ENVIRONMENT 266(2021):9.