DOI: 10.1016/j.atmosenv.2015.02.074
Scopus记录号: 2-s2.0-84924911820
论文题名: Characterization of ambient PM2.5 at a pollution hotspot in New Delhi, India and inference of sources
作者: Pant P ; , Shukla A ; , Kohl S ; D ; , Chow J ; C ; , Watson J ; G ; , Harrison R ; M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 109 起始页码: 178
结束页码: 189
语种: 英语
英文关键词: India
; Mass closure
; Molecular markers
; Particulate matter
; Traffic
Scopus关键词: Air quality
; Air quality standards
; Chlorine compounds
; Lead
; Nitrates
; Nitrogen compounds
; Telecommunication traffic
; Titanium
; Combustion sources
; Crustal materials
; Enrichment factors
; India
; Mass closure
; Molecular marker
; New Delhi , India
; Particulate Matter
; Trace elements
; alkane derivative
; carbohydrate
; carbon
; carbromal
; chloride
; hopanoid
; lead
; molecular marker
; nitric acid derivative
; polycyclic aromatic hydrocarbon
; prednisolone
; sulfate
; titanium
; trace metal
; air quality
; concentration (composition)
; human activity
; particulate matter
; pollutant transport
; pollution monitoring
; traffic emission
; air pollution
; air quality standard
; air sampling
; ambient air
; Article
; chemical analysis
; combustion
; exhaust gas
; India
; particulate matter
; priority journal
; summer
; winter
; wood
; Delhi
; India
; India
; New Delhi
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: Ambient PM2.5 samples were collected at a high-traffic location (summer and winter 2013) and characterized for a large suite of elemental and organic markers. Concentrations were found to exceed the Indian PM2.5 air quality standard on several occasions, especially in the winter. Winter concentrations of several individual tracer species were several fold higher compared to summer, particularly for some PAHs and trace metals. Enrichment factors relative to crustal material showed significant enrichment for elements such as Ti, Sb, Pb and As, although Ba, often used as a marker for non-exhaust emissions from traffic was not found to be enriched appreciably. Crustal material was found to be an important contributor in the summer (14.3%), while wood burning (23.3%), nitrates (12.4%) and chlorides (12.3%) were found to be major contributors in winter. The contribution of road traffic exhaust emissions was estimated to be 18.7% in summer and 16.2% in winter. Other combustion sources (wood and other biomass/waste/coal) were found to be a significant source in winter, and contribute to the higher concentrations. Secondary sulphates, nitrates and chloride (the latter two in winter) and organic matter also contribute substantially to PM2.5 mass. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81825
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Division of Environmental Health and Risk Management, School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom; Environmental Science Division, Central Road Research Institute, New Delhi, India; Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV, United States; Department of Environmental Sciences, Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, Saudi Arabia
Recommended Citation:
Pant P,, Shukla A,, Kohl S,et al. Characterization of ambient PM2.5 at a pollution hotspot in New Delhi, India and inference of sources[J]. Atmospheric Environment,2015-01-01,109