DOI: 10.1016/j.atmosres.2017.11.033
Scopus记录号: 2-s2.0-85038617950
论文题名: Characteristics of fine particulate matter and its sources in an industrialized coastal city, Ningbo, Yangtze River Delta, China
作者: Wang W. ; Yu J. ; Cui Y. ; He J. ; Xue P. ; Cao W. ; Ying H. ; Gao W. ; Yan Y. ; Hu B. ; Xin J. ; Wang L. ; Liu Z. ; Sun Y. ; Ji D. ; Wang Y.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 203 起始页码: 105
结束页码: 117
语种: 英语
英文关键词: Chemical species
; PM2.5
; Source apportionment
; Yangtze River Delta
Scopus关键词: Air pollution
; Air quality
; Chemical industry
; Chlorine compounds
; Cluster analysis
; Degradation
; Dust
; Factorization
; Incineration
; Manufacture
; Metallurgy
; Molybdenum
; Organic carbon
; Pollution
; River pollution
; Rivers
; Waste incineration
; Water treatment
; Airborne particulate matters
; Chemical species
; Organic and elemental carbon
; PM2.5
; Positive matrix factorization models
; Potential source contribution function models
; Source apportionment
; Yangtze river delta
; Particles (particulate matter)
; aerosol
; atmospheric pollution
; cluster analysis
; concentration (composition)
; guideline
; industrial location
; particulate matter
; source apportionment
; spatial distribution
; urban pollution
; World Health Organization
; China
; Ningbo
; Yangtze Delta
; Zhejiang
英文摘要: Chemical information is essential in understanding the characteristics of airborne particles, and effectively controlling airborne particulate matter pollution, but it remains unclear in some regions due to the scarcity of measurement data. In the present study, 92 daily PM2.5 (particulate matter with an aerodynamic diameter ≤ 2.5 μm) samples as well as historical observation data of air pollutants were collected in urban Ningbo, one of important industrial cities in the coastal area of the Yangtze River Delta, China in autumn and winter (from Nov. 2014 to Feb. 2015). Various chemical species in PM2.5 were determined including water soluble ions, organic and elemental carbon and elements. Positive matrix factorization model, cluster analysis of back trajectories, potential source contribution function (PSCF) model and concentration-weighted trajectory (CWT) model were used for identifying sources, apportioning contributions from each source and tracking potential areas of sources. The results showed the PM2.5 concentration has been reducing; nonetheless, the concentrations of PM2.5 are still much higher than the World Health Organization guideline with high PM2.5 concentrations observed in autumn and winter for the past few years. During the sampling period, the average PM2.5 mass concentration was 77 μg/m3 with the major components of OC, NO3 −, SO4 2 −, NH4 + and EC, accounting for 24.7, 18.8, 14.5, 11.8 and 6.4% in the total mass concentration, respectively. When the aerosol pollution got worse during the sampling period, the NO3 −, SO4 2 − and NH4 + concentrations increased accordingly and NO3 − appeared to increase at fastest rate. SO4 2 − transported from industrial areas led to slight difference in spatial distribution of SO4 2 − in Ningbo. More secondary organic carbon was formed and the enrichment factor values of Cu, Ag, Cd, Sn and Pb increased with the degradation of air quality. Ten types of sources were identified for PM2.5 in the autumn and winter of Ningbo, which are metallurgical industry, biomass burning and waste incineration, manufacturing related with Mo, chlor-alkli chemical industry, oil combustion, vehicular emission, secondary source, soil dust, road dust and manufacturing related with Cr, accounting for 9.4, 4.8, 9.4, 7.6, 8.1, 18.7, 27.6, 2, 7.1 and 5.2% of the total sources, respectively. There were five groups of air parcels arriving in Ningbo, of which inland air masses originating from Shandong province were associated with the highest PM2.5 concentrations. Despite the slight differences, it was obvious that the north of Jiangxi, east of Anhui, west of Jiangsu, south of Shandong were identified as major potential sources-areas of SO4 2 −, NO3 −, NH4 +, Cl−, OC and EC by both PSCF and CWT models. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108958
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Environment monitoring center of Ningbo, Ningbo, 315012, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; International Doctoral Innovation Centre, Natural Resources and Environment Research Group, Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
Recommended Citation:
Wang W.,Yu J.,Cui Y.,et al. Characteristics of fine particulate matter and its sources in an industrialized coastal city, Ningbo, Yangtze River Delta, China[J]. Atmospheric Research,2018-01-01,203