DOI: 10.1016/j.atmosenv.2015.01.064
Scopus记录号: 2-s2.0-84922345319
论文题名: Seasonal variation of urban carbonaceous aerosols in a typical city Nanjing in Yangtze River Delta, China
作者: Li B ; , Zhang J ; , Zhao Y ; , Yuan S ; , Zhao Q ; , Shen G ; , Wu H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 106 起始页码: 223
结束页码: 231
语种: 英语
英文关键词: Carbon fractions
; EC
; OC
; Particles
; SOC
; YRD
Scopus关键词: Aerosols
; Carbon
; Elementary particles
; Organic carbon
; Particles (particulate matter)
; Carbon fraction
; EC
; OC
; SOC
; YRD
; River pollution
; carbon
; elemental carbon
; organic carbon
; potassium ion
; secondary organic carbon
; sulfur
; unclassified drug
; aerosol composition
; atmospheric pollution
; biomass burning
; carbon
; concentration (composition)
; organic carbon
; oxidation
; seasonal variation
; sulfur
; urban atmosphere
; urban pollution
; aerosol
; air pollution
; Article
; autumn
; biomass burning
; biotechnological procedures
; carbon footprint
; China
; combustion
; controlled study
; harvest period
; heating
; oxidation
; particle size
; particulate matter
; priority journal
; seasonal variation
; spring
; sulfur oxidation ratio
; summer
; urban area
; weather
; winter
; China
; Jiangsu
; Nanjing [Jiangsu]
; Yangtze Delta
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The Yangtze River Delta (YRD) is one of the regions with the most dynamic economy and severe atmospheric pollution in China. In order to characterize the particle features, especially the carbonaceous component in the YRD, particulate matter smaller than 2.5μm (PM2.5) and 10μm (PM10) samples in each season were collected in urban Nanjing, a typical city that locates in the west part of the YRD. The organic carbon (OC) and elemental carbon (EC) was differentiated using the thermal optical reflectance method. The average concentrations of PM2.5, OC and EC during the study periods were observed to be 117.6, 13.8, and 5.3μg/m3 respectively, with all the highest levels in winter. The mass fraction of the Total carbonaceous aerosol (TCA) in PM2.5 was estimated at 23% on average, lower than those reported for other cities in the YRD. The OC and EC correlated well in all the seasons, especially in spring and winter, implying that OC and EC were attributed to common emission sources. Good correlation was observed between OC and estimated K+ from biomass burning in the harvest season in autumn and summer, indicating biomass burning a significant source of carbonaceous aerosols. This could also be confirmed by the lower fraction of OC3+OC4 in OC during autumn and summer. The secondary organic carbon (SOC) estimated by EC-tracer method was the highest in winter (7.3μg/m3) followed by autumn (6.7μg/m3), summer (3.7μg/m3) and spring (2.0μg/m3). However, the SOC/OC in winter was not as high as that in summer and autumn, implying the high concentration of OC in winter was probably due to the stable weather but not mainly caused by SOC formation. The high SOC/OC ratio in summer was attributed to stronger oxidation, which could be suggested by higher sulfur oxidation ratio (SOR). © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81881
Appears in Collections: 气候变化事实与影响
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作者单位: Jiangsu Provincial Academy of Environmental Science, 176 North Jiangdong Rd., Nanjing, Jiangsu, China; State Key Laboratory of Pollution Control and Resource Reuse and School of the Environment, Nanjing University, 163 Xianlin Ave., Nanjing, Jiangsu, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, CICAEET, Nanjing, Jiangsu, China
Recommended Citation:
Li B,, Zhang J,, Zhao Y,et al. Seasonal variation of urban carbonaceous aerosols in a typical city Nanjing in Yangtze River Delta, China[J]. Atmospheric Environment,2015-01-01,106