DOI: 10.1016/j.atmosenv.2016.10.053
Scopus记录号: 2-s2.0-84995763300
论文题名: Changes in concentration, composition and source contribution of atmospheric organic aerosols by shifting coal to natural gas in Urumqi
作者: Ren Y ; , Wang G ; , Wu C ; , Wang J ; , Li J ; , Zhang L ; , Han Y ; , Liu L ; , Cao C ; , Cao J ; , He Q ; , Liu X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 148 起始页码: 306
结束页码: 315
语种: 英语
英文关键词: Health risk assessment
; Molecular compositions
; n-Alkanes
; Oxygenated PAHs
; PAHs
; Source apportionment
Scopus关键词: Aerosols
; Atmospheric aerosols
; Coal
; Health
; Health risks
; Heating
; Natural gas
; Paraffins
; Polycyclic aromatic hydrocarbons
; Risk assessment
; Clean energy sources
; Molecular compositions
; n-Alkanes
; Project implementation
; Relative contribution
; Source apportionment
; Source contributions
; Urban atmospheres
; Coal combustion
; alkane derivative
; coal
; natural gas
; polycyclic aromatic hydrocarbon derivative
; aerosol composition
; atmospheric pollution
; biomass burning
; cancer
; coal combustion
; concentration (composition)
; health risk
; heating
; molecular analysis
; natural gas
; organic compound
; PAH
; public health
; risk assessment
; source apportionment
; traffic emission
; urban atmosphere
; aerosol
; Article
; atmospheric dispersion
; biomass
; chemical composition
; China
; combustion
; concentration (parameters)
; controlled study
; heating
; priority journal
; season
; China
; Urumqi
; Xinjiang Uygur
; Lamprididae
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: Size-segregated aerosols were collected in Urumqi, a megacity in northwest China, during two heating seasons, i.e., before (heating season І: January–March 2012) and after (heating season II: January–March 2014) the project “shifting coal to natural gas”, and determined for n-alkanes, PAHs and oxygenated PAHs to investigate the impact of replacement of coal by natural gas on organic aerosols in the urban atmosphere. Our results showed that compared to those in heating season I concentrations of n-alkanes, PAHs and OPAHs decreased by 74%, 74% and 82% in heating season II, respectively. Source apportionment analysis suggested that coal combustion, traffic emission and biomass burning are the major sources of the determined organics during the heating seasons in Urumqi. Traffic emission is the main source for n-alkanes in the city. Coal combustion is the dominant source of PAHs and OPAHs in heating season І, but traffic emission becomes their major source in heating season ІI. Relative contributions of coal combustion to n-alkanes, PAHs and OPAHs in Urumqi decreased from 21 to 75% in heating season I to 4.0–21% in heating season II due to the replacement of coal with natural gas for house heating. Health risk assessment further indicated that compared with that in heating season I the number of lung cancer related to PAHs exposure in Urumqi decreased by 73% during heating season II due to the project implementation. Our results suggest that replacing coal by clean energy sources for house heating will significantly mitigate air pollution and improve human health in China. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82612
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Loess and Quaternary Geology, Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; University of Chinese Academy of Sciences, Beijing, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China; Institute of Desert Meteorology, China Meteorological Administration, Urumqi, China
Recommended Citation:
Ren Y,, Wang G,, Wu C,et al. Changes in concentration, composition and source contribution of atmospheric organic aerosols by shifting coal to natural gas in Urumqi[J]. Atmospheric Environment,2017-01-01,148