Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain

doi:10.1016/j.atmosres.2019.104668

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

	Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain
	Luo, YY ; Zhou, XH ; Zhang, JZ ; Xue, LK ; Chen, TS ; Zheng, PG ; Sun, JJ ; Yan, XL ; Han, GX ; Wang, WX
刊名	ATMOSPHERIC RESEARCH
	2020
卷号	231 页码:UNSP 104668
关键词	WSOC ALW Acidity Light absorption PSCF
ISSN号	0169-8095
DOI	10.1016/j.atmosres.2019.104668
产权排序	[Luo, Yuanyuan ; Zhou, Xuehua ; Zhang, Jingzhu ; Xue, Likun ; Chen, Tianshu ; Zheng, Penggang ; Sun, Jingjing ; Wang, Wenxing] Shandong Univ, Environm Res Inst, Qingdao 266237, Shandong, Peoples R China ; [Yan, Xiaolong] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China ; [Han, Guangxuan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China
文献子类	Article
英文摘要	Water-soluble organic carbon (WSOC), a significant part of organic carbon (OC) in fine particles, can alter the hygroscopic properties of aerosols and affect global climate change. In this study, PM2.5 filter samples were collected in 2017 winter and summer to investigate the secondary formation, sources and light absorption properties of WSOC. The average WSOC/OC was 66% with the higher value in summer (74%). There are strong correlations between WSOC and secondary components like secondary organic carbon (SOC) and inorganic ions while the correlation between WSOC and EC was weak, indicating secondary formation contributed a dominant portion to WSOC at this site. Moreover, high aerosol liquid water (ALW) and particle acidity were found to enhance the secondary formation of WSOC. The sources of WSOC investigated with Positive Matrix Factorization model (PMF) demonstrated that secondary formation was dominated with 59.9% in winter and 77.9% in summer. The absorption Angstrom exponents (AAE) were 6.88 in winter and 9.15 in summer. The MAE(365) in winter (1.32m(2) g(-1)) was higher than that in summer (0.38m(2) g(-1)), indicating the stronger light absorption ability of WSOC in winter. The radiative forcing of WSOC by light absorption corresponded to only 1-10% of that caused by EC. The potential source contribution function (PSCF) identified inland cities in Shandong province, eastern Henan and Jiangsu province as major source regions of WSOC. The findings from this study imply a critical role of secondary formation characteristics of WSOC at the regional background site of the North China Plain.
WOS关键词	FINE PARTICULATE MATTER ; AQUEOUS-PHASE REACTIONS ; LIGHT-ABSORPTION ; SOURCE APPORTIONMENT ; AEROSOL FORMATION ; CHEMICAL-CHARACTERIZATION ; SEASONAL-VARIATIONS ; OPTICAL-PROPERTIES ; TRACE-ELEMENTS ; UNITED-STATES
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000513178000012
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21507070, 41675118, 91544213] ; Key Laboratory of Photochemical Conversion and Optoelectronic Materials, TIPC, CASChinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24773]
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
作者单位	1.Shandong Univ, Environm Res Inst, Qingdao 266237, Shandong, Peoples R China; 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China 3.Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China;
推荐引用方式 GB/T 7714	Luo, YY,Zhou, XH,Zhang, JZ,et al. Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain[J]. ATMOSPHERIC RESEARCH,2020,231:UNSP 104668.
APA	Luo, YY.,Zhou, XH.,Zhang, JZ.,Xue, LK.,Chen, TS.,...&Wang, WX.(2020).Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain.ATMOSPHERIC RESEARCH,231,UNSP 104668.
MLA	Luo, YY,et al."Characteristics of airborne water-soluble organic carbon (WSOC) at a background site of the North China Plain".ATMOSPHERIC RESEARCH 231(2020):UNSP 104668.