| 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
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| 发表期刊 | ATMOSPHERIC RESEARCH
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| ISSN | 0169-8095 |
| 2020 | |
| 卷号 | 231页码:UNSP 104668 |
| 关键词 | WSOC ALW Acidity Light absorption PSCF |
| 研究领域 | Meteorology & Atmospheric Sciences |
| 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 |
| 通讯作者 | Zhou, Xuehua([email protected]) |
| 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 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24773 |
| 专题 | 中国科学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 中国科学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 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. |
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