Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.01.023 |
Characterization of inorganic ions in rainwater in the megacity of Shanghai: Spatiotemporal variations and source apportionment | |
Meng, Ya1; Zhao, Yilong1; Li, Rui1; Li, Junlin1; Cui, Lulu1; Kong, Lingdong1; Fu, Hongbo1,2,3 | |
2019-07-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 222页码:12-24 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | In the present study, the pH values and the concentrations of nine inorganic ions (SO42-, NO3-, NH4+, Cl-, Na+, Ca2+, K+, Mg2+ and F-) in rainwater samples collected in Shanghai during 2011-2016 were measured to study their spatiotemporal variations and to identify their sources. The rainwater was severely acidified with an average volume-weighted mean (VWM) pH value of 4.96 during 2011-2016, indicating that Shanghai still suffers from severe acid rain pollution. The VWM concentrations of the measured ions in the rainwater samples decreased by 2653% during 2011-2012. Then, SO42-, NO3-, NH4+, Ca2+ and F-remained at relatively stable levels during 2012-2016, whereas Cl-, Na+ and Mg2+ fluctuated during the same period. The seasonal variations showed that all of the ions except for NH4+ exhibited the highest VWM concentrations in winter, followed by those in spring and autumn, and the lowest values were in summer. The highest VWM concentrations of these ions in winter were mainly attributed to adverse meteorological conditions, the rare rainfall, as well as greater anthropogenic emissions. The spatial distributions of the VWM concentrations of SO42-, NO3- and NH4+ in rainwater in Shanghai during 2014 were significantly linked to local emission sources, and higher levels of SO42- and NO3- were observed in the industrial and populated areas (i.e., the JS and PD districts), whereas higher VWM concentrations of NH4+ were concentrated in agricultural areas (i.e., the QP and SJ districts). The wet deposition fluxes of SO42-, NO3- and NH4+ were closely related to rainfall. The areas featured by greater rainfall generally presented higher wet deposition fluxes of SO42-, NO3- and NH4+. On the basis of the positive matrix factorization (PMF) and Enrich factor (EF) analysis, five sources for the inorganic ions in rainwater in urban Shanghai were identified, including secondary formation, crustal/soil dust, construction emissions, marine sources and waste incineration emissions. Our results provided a comprehensive picture of the ionic compositions of rainwater in Shanghai and could help the government to develop targeted regulations to reduce acid deposition in this typical megacity of China. |
英文关键词 | Water-soluble ions Rainwater Spatiotemporal variation Source identification Shanghai |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463123500002 |
WOS关键词 | YANGTZE-RIVER DELTA ; LONG-TERM TREND ; WET ATMOSPHERIC PRECIPITATION ; POSITIVE MATRIX FACTORIZATION ; CHEMICAL-COMPOSITION ; ACID-RAIN ; NITROGEN DEPOSITION ; UNITED-STATES ; PARTICULATE POLLUTANTS ; SATELLITE-OBSERVATIONS |
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/184331 |
专题 | 地球科学 |
作者单位 | 1.Fudan Univ, Inst Atmospher Sci, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China; 2.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, CICAEET, Nanjing 210044, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Meng, Ya,Zhao, Yilong,Li, Rui,et al. Characterization of inorganic ions in rainwater in the megacity of Shanghai: Spatiotemporal variations and source apportionment[J]. ATMOSPHERIC RESEARCH,2019,222:12-24. |
APA | Meng, Ya.,Zhao, Yilong.,Li, Rui.,Li, Junlin.,Cui, Lulu.,...&Fu, Hongbo.(2019).Characterization of inorganic ions in rainwater in the megacity of Shanghai: Spatiotemporal variations and source apportionment.ATMOSPHERIC RESEARCH,222,12-24. |
MLA | Meng, Ya,et al."Characterization of inorganic ions in rainwater in the megacity of Shanghai: Spatiotemporal variations and source apportionment".ATMOSPHERIC RESEARCH 222(2019):12-24. |
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