Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.09.014 |
Aerosol chemical compositions in the North China Plain and the impact on the visibility in Beijing and Tianjin | |
Zou, Jianan1,2; Liu, Zirui2; Hu, Bo2; Huang, Xiaojuan2,3; Wen, Tianxue2; Ji, Dongsheng2; Liu, Jingyun2,4; Yang, Yang5; Yao, Qing6; Wang, Yuesi1,2,7 | |
2018-03-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 201页码:235-246 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | To better understand the characteristics of the chemical compositions of aerosols comprised of water soluble ions (WSIs) and carbonaceous aerosol (CA) and their impacts on the visibility throughout the North China Plain (NCP), four experimental sampling campaigns were carried out between June 2013 and May 2014. The sampling sites were located in Beijing, Xiangshan, Tianjin, Shijiazhuang, and Qinhuangdao. The air pollution episodes mainly occurred during the autumn and winter in the NCP. With regard to different particle size distributions, the ratio of anions to cations in the fine size (0.64) was greater than that in the coarse size (0.54) in the NCP. Coefficients of divergence indicate that aerosol pollution had similar characteristics in the five cities of the NCP and that the pollutants were characterized by mutual influences and regional transfer processes. There were different non-linear correlations between the visibility and mass concentrations of PM2.5 at different relative humidity (RH) conditions. When the RH was > 70%, the visibility was < 5 km; this shows that, due to hygroscopic growth in a higher RH, the increase in PM2.1 resulted in a decrease in the visibility. The Interagency Monitoring of Protected Visual Environments (IMPROVE) method was used to estimate the light extinction coefficients (LEC) from the measured concentrations of chemical species. Organic matter (OM), ammonium nitrate (AN), and ammonium sulfate (AS) were the three dominant species that contributed to the LEC in Beijing and had the highest proportions of total contributions to the LEC in the summer, accounting for 32.2%, 25.9%, and 24.4%, respectively. The LEC of sea salts did not change much throughout the year and accounted for 4.1-5.3% in Beijing and 4.8-7.4% in Tianjin. According to the Ambient Air Quality Standard, the days were divided into pollutional days (PD) and attained days (AD). The increasing concentrations of AN, AS and OM resulted in an increase in the LEC in the NCP, which led to the occurrences of low visibility events during the autumn and winter. NH4+, NO3-, and SO42- mainly existed as fine size particles (diameter < 2.1 pm) in Beijing (73.5%, 80.7%, and 78.0% on PD and 63.3%, 79.4%, and 72.5% on AD, respectively) and Tianjin (81.0%, 80.6%, and 82.1% on PD and 71.5%, 44.3%, and 69.7% on AD, respectively). However, the CA originating mainly from fuel combustion also played an important part in the visibility impairment in the coarse size (2.1 < diameter < 9.0 pm). According to a positive matrix factorization (PMF) model, 37.1% and 26.5% of the LEC came from secondary aerosols on PD in Beijing and in Tianjin, respectively. In addition, biomass burning, fuel combustion and fugitive dust were also important contributing sources of the LEC in the NCP. |
英文关键词 | Aerosol chemical composition Light extinction coefficients Visibility North China Plain IMPROVE |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418981500019 |
WOS关键词 | YANGTZE-RIVER DELTA ; SOLUBLE INORGANIC-IONS ; SIZE-SEGREGATED AEROSOL ; RELATIVE-HUMIDITY ; LIGHT EXTINCTION ; OPTICAL-PROPERTIES ; CARBONACEOUS COMPONENTS ; ATMOSPHERIC VISIBILITY ; TEMPORAL VARIABILITY ; SOURCE APPORTIONMENT |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37978 |
专题 | 地球科学 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 3.Chengdu Univ Informat Technol, Sch Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Sichuan, Peoples R China; 4.Beijing Univ Chem Technol, Dept Environm Sci & Engn, Beijing 100029, Peoples R China; 5.Weather Modificat Off Hebei Prov, Shijiazhuang 050021, Hebei, Peoples R China; 6.Tianjin Environm Meteorol Ctr, Tianjin 300074, Peoples R China; 7.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China |
推荐引用方式 GB/T 7714 | Zou, Jianan,Liu, Zirui,Hu, Bo,et al. Aerosol chemical compositions in the North China Plain and the impact on the visibility in Beijing and Tianjin[J]. ATMOSPHERIC RESEARCH,2018,201:235-246. |
APA | Zou, Jianan.,Liu, Zirui.,Hu, Bo.,Huang, Xiaojuan.,Wen, Tianxue.,...&Wang, Yuesi.(2018).Aerosol chemical compositions in the North China Plain and the impact on the visibility in Beijing and Tianjin.ATMOSPHERIC RESEARCH,201,235-246. |
MLA | Zou, Jianan,et al."Aerosol chemical compositions in the North China Plain and the impact on the visibility in Beijing and Tianjin".ATMOSPHERIC RESEARCH 201(2018):235-246. |
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