Luo, YY; Zhou, XH; Zhang, JZ; Xue, LK; Chen, TS; Zheng, PG; Sun, JJ; Yan, XL; Han, GX
; Wang, WX发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
2020
卷号231页码:UNSP 104668
关键词WSOCALWAcidityLight absorptionPSCF
研究领域Meteorology & Atmospheric Sciences
DOI10.1016/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
通讯作者Zhou, Xuehua(xuehuazhou@sdu.edu.cn)
作者部门海岸带环境过程实验室
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.
文章类型Article
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
收录类别SCI
语种英语
关键词[WOS]FINE PARTICULATE MATTER; AQUEOUS-PHASE REACTIONS; LIGHT-ABSORPTION; SOURCE APPORTIONMENT; AEROSOL FORMATION; CHEMICAL-CHARACTERIZATION; SEASONAL-VARIATIONS; OPTICAL-PROPERTIES; TRACE-ELEMENTS; UNITED-STATES
研究领域[WOS]Meteorology & Atmospheric Sciences
WOS记录号WOS:000513178000012
引用统计被引频次：5[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/133337/24773
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
作者单位1.Shandong Univ, Environm Res Inst, Qingdao 266237, Shandong, Peoples R China;
2.Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China;
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Shandong, Peoples R China
推荐引用方式
GB/T 7714Luo, 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.
APALuo, 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.
MLALuo, 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.
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