Size distribution and formation processes of aerosol water-soluble organic carbon during winter and summer in urban Beijing

doi:10.1016/j.atmosenv.2020.117983

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

	Size distribution and formation processes of aerosol water-soluble organic carbon during winter and summer in urban Beijing
	Ni, Xue 1,4; Pan, Yuepeng 4; Shao, Peng 3; Tian, Shili 3; Zong, Zheng 2; Gu, Mengna 4; Liu, Bowen 4; Liu, Jin 4; Cao, Jing 4; Sun, Qian 4
刊名	ATMOSPHERIC ENVIRONMENT
	2021
卷号	244 页码:9
关键词	Water-soluble organic carbon Haze pollution Particle size distribution Secondary processes Beijing
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2020.117983
通讯作者	Tian, Shili(tianshili@mail.iap.ac.cn) ; Jiang, Changsheng(jiangcs@126.com)
英文摘要	Size-resolved aerosol organic carbon (OC) and water-soluble OC (WSOC) was determined weekly in urban Beijing between 2013 and 2018. The results showed that in winter, the concentrations of WSOC and OC in fine (<2.1 mu m) and coarse (>2.1 mu m) mode were highest in 2013. During the following years, the concentrations of WSOC and OC were lower but an increasing trend was found from 2014 to 2016, which might be due to the increasing precursor concentrations. From summer 2013 to 2018, the concentrations of OC and WSOC in both fine and coarse mode decreased, which might be affected by decreasing emission intensity and photochemical oxidation. To characterize the seasonality of WSOC, two intensive field observations were further performed in winter 2013 and summer 2018. In winter of 2013, WSOC was mainly enriched in PM1 (<1 mu m) on clean days and lightly polluted days. In addition, the fine mode maximum shifted from 0.43-0.65 mu m to 1.1-2.1 mu m with the haze development due to the hygroscopic growth of particles. In summer of 2018, the WSOC was mainly concentrated in PM1, but in a few samples, the maximum size appeared in coarse mode. This difference might due to the different relative humidity and air mass sources. While the formation process of WSOC in winter was affected by photochemical oxidation below 2.1 mu m, in 1.1-2.1 mu m, it tended to change from photochemical oxidation to aqueous-phase oxidation. For the coarse mode WSOC formation in winter, however, it was mainly affected by heterogeneous processes. The findings advanced our understanding of the annual trends, size distribution and formation processes of WSOC, with significant implications for air pollution control in Beijing and surrounding regions.
资助项目	National Key Research and Development Program of China[2017YFC0210103] ; National Natural Science Foundation of China[41977186] ; National Natural Science Foundation of China[41807311]
WOS关键词	DICARBOXYLIC-ACIDS ; ELEMENTAL CARBON ; HAZE POLLUTION ; ALPHA-DICARBONYLS ; PM2.5 ; CHINA ; IMPACT ; AREAS ; WSOC ; VARIABILITY
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000591731800001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/28347]
专题	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烟台海岸带研究所_近岸生态与环境实验室
通讯作者	Tian, Shili; Jiang, Changsheng
作者单位	1.Southwest Univ, Coll Resources & Environm, State Cultivat Base Ecoagr Southwest Mt Land, Chongqing 400715, 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.Beijing Ctr Phys & Chem Anal, Beijing 100089, Peoples R China 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Ni, Xue,Pan, Yuepeng,Shao, Peng,et al. Size distribution and formation processes of aerosol water-soluble organic carbon during winter and summer in urban Beijing[J]. ATMOSPHERIC ENVIRONMENT,2021,244:9.
APA	Ni, Xue.,Pan, Yuepeng.,Shao, Peng.,Tian, Shili.,Zong, Zheng.,...&Jiang, Changsheng.(2021).Size distribution and formation processes of aerosol water-soluble organic carbon during winter and summer in urban Beijing.ATMOSPHERIC ENVIRONMENT,244,9.
MLA	Ni, Xue,et al."Size distribution and formation processes of aerosol water-soluble organic carbon during winter and summer in urban Beijing".ATMOSPHERIC ENVIRONMENT 244(2021):9.