Ni, Xue1,2; Pan, Yuepeng2; Shao, Peng3; Tian, Shili3; Zong, Zheng4; Gu, Mengna2; Liu, Bowen2; Liu, Jin2; Cao, Jing2; Sun, Qian2; Wang, Yuesi2; Jiang, Changsheng1
发表期刊ATMOSPHERIC ENVIRONMENT
ISSN1352-2310
2021
卷号244页码:9
关键词Water-soluble organic carbonHaze pollutionParticle size distributionSecondary processesBeijing
DOI10.1016/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.
资助机构National Key Research and Development Program of China; National Natural Science Foundation of China
收录类别SCI
语种英语
关键词[WOS]DICARBOXYLIC-ACIDS; ELEMENTAL CARBON; HAZE POLLUTION; ALPHA-DICARBONYLS; PM2.5; CHINA; IMPACT; AREAS; WSOC; VARIABILITY
研究领域[WOS]Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences
WOS记录号WOS:000591731800001
引用统计被引频次：1[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/133337/28348
专题中科院海岸带环境过程与生态修复重点实验室
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
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, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
3.Beijing Ctr Phys & Chem Anal, Beijing 100089, Peoples R China
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714Ni, 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.
APANi, 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.
MLANi, 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.
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