DOI: 10.1016/j.atmosenv.2017.04.040
Scopus记录号: 2-s2.0-85018298048
论文题名: Characterization of traffic-related ambient fine particulate matter (PM2.5) in an Asian city: Environmental and health implications
作者: Zhang Z ; -H ; , Khlystov A ; , Norford L ; K ; , Tan Z ; -K ; , Balasubramanian R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161 起始页码: 132
结束页码: 143
语种: 英语
英文关键词: Chemical composition
; PM2.5
; Risk assessment
; Traffic-related emissions
Scopus关键词: Aerosols
; Aromatic compounds
; Aromatic hydrocarbons
; Carbon
; Chemical analysis
; Chemical speciation
; Health risks
; Organic carbon
; Paraffins
; Particles (particulate matter)
; Risk assessment
; Risk perception
; Trace elements
; Urban growth
; Vehicles
; Chemical compositions
; Chemical constituents
; Diesel-powered vehicles
; Emission characteristics
; Fine particulate matter
; Particulate pollution
; Secondary organic aerosols
; Traffic-related emissions
; Polycyclic aromatic hydrocarbons
; alkane derivative
; ammonia
; aromatic carboxylic acid
; chemical compound
; diesel fuel
; hopanoid
; lubricating agent
; molecular marker
; organic carbon
; organic compound
; petroleum derivative
; polycyclic aromatic hydrocarbon
; prednisolone derivative
; trace element
; aerosol
; atmospheric pollution
; cancer
; carcinogen
; health risk
; organic carbon
; particulate matter
; public health
; risk assessment
; roadside environment
; speciation (chemistry)
; toxic substance
; trace element
; traffic emission
; urban atmosphere
; urban pollution
; air pollution
; air pollution control
; ambient air
; Article
; chemical analysis
; chemical composition
; combustion
; concentration (parameters)
; environmental exposure
; environmental impact
; exhaust gas
; health hazard
; Hong Kong
; human
; microenvironment
; particulate matter
; priority journal
; risk assessment
; secondary organic aerosol
; Singapore
; species differentiation
; toxic inhalation
; traffic and transport
; urban area
; Singapore [Southeast Asia]
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: Vehicular traffic emission is an important source of particulate pollution in most urban areas. The detailed chemical speciation of traffic-related PM2.5 (fine particles) is relatively sparse in the literature, especially in Asian cities. To fill this knowledge gap, we carried out an intensive field study in Singapore from November 2015 to February 2016. PM2.5 samples were collected concurrently at a typical roadside microenvironment and at an urban background site. A detailed chemical speciation of PM2.5 samples was conducted to gain insights into the emission characteristics of traffic-related fine aerosols. Analyses of diagnostic ratios and molecular markers of selected chemical species were explored for source attribution of different classes of chemical constituents in traffic-related PM2.5. The human health risk due to inhalation of the particulate-bound PAHs (polycyclic aromatic hydrocarbons) and toxic trace elements was estimated for both adults and children. The overall results of the study indicate that gasoline-powered vehicles make a higher contribution to traffic-related fine aerosol components such as organic carbon (OC), particle-bound PAHs and particulate ammonium than that of diesel-powered vehicles. However, both types of vehicles contribute to traffic-related EC emissions significantly. The combustion of petroleum fuels and lubricating oil make significant contributions to the emission of n-alkanes and hopanes into the urban atmosphere, respectively. The study further reveals that some toxic trace elements are emitted from non-exhaust sources and that aromatic acids represent an important component of secondary organic aerosols. The emission of toxic trace elements from non-exhaust sources is of particular concern as they could pose a higher carcinogenic risk to both adults and children than other chemical species. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82818
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, 1 Engineering Drive 2, E1A #07-03, Singapore, Singapore; Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, United States; Department of Architecture, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Zhang Z,-H,, Khlystov A,et al. Characterization of traffic-related ambient fine particulate matter (PM2.5) in an Asian city: Environmental and health implications[J]. Atmospheric Environment,2017-01-01,161