DOI: 10.1016/j.atmosenv.2015.02.041
Scopus记录号: 2-s2.0-84922976777
论文题名: Source apportionment of gaseous and particulate PAHs from traffic emission using tunnel measurements in Shanghai, China
作者: Liu Y ; , Wang S ; , Lohmann R ; , Yu N ; , Zhang C ; , Gao Y ; , Zhao J ; , Ma L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 107 起始页码: 129
结束页码: 136
语种: 英语
英文关键词: Atmospheric pollution
; PAHs
; PCA
; PM10
; PMF
; Yan'an east road tunnel
Scopus关键词: Combustion
; Condensation
; Correlation methods
; Diesel engines
; Fuels
; Linear regression
; Multivariant analysis
; Pollution
; Principal component analysis
; Regression analysis
; Roads and streets
; Statistical methods
; Temperature
; Atmospheric pollution
; PAHs
; PCA
; PMF
; Road tunnel
; Polycyclic aromatic hydrocarbons
; acenaphthene derivative
; acenaphthylene
; anthracene
; benzo[a]pyrene
; benzo[b]fluoranthene
; benzo[e]pyrene
; benzo[ghi]perylene
; benzo[k]fluoranthene
; benz[a]anthracene
; chrysene
; dibenz[a,h]anthracene
; dimethylphenanthrene
; fluorene
; fuel
; indeno[1,2,3 cd]pyrene
; methylnaphthalene
; methylphenanthrene
; naphthalene
; perylene
; phenanthrene
; polycyclic aromatic hydrocarbon derivative
; pyrene
; toxic gas
; unclassified drug
; air sampling
; atmospheric pollution
; indoor air
; PAH
; pollutant source
; principal component analysis
; traffic emission
; tunnel
; urban pollution
; ambient air
; Article
; China
; combustion
; correlation analysis
; environmental temperature
; exhaust gas
; high temperature
; limit of detection
; low temperature
; multiple linear regression analysis
; particle size
; particulate matter
; physical chemistry
; principal component analysis
; priority journal
; urban area
; China
; Shanghai
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: Understanding sources and contributions of gaseous and particulate PAHs from traffic-related pollution can provide valuable information for alleviating air contamination from traffic in urban areas. On-road sampling campaigns were comprehensively conducted during 2011-2012 in an urban tunnel of Shanghai, China. 2-3 rings PAHs were abundant in the tunnel's gas and particle phases. Diagnostic ratios of PAHs were statistically described; several were significantly different between the gas and particle phases. Principal component analysis (PCA), positive matrix factorization (PMF), bivariate correlation analysis and multiple linear regression analysis (MLRA) were applied to apportion sources of gaseous and particulate PAHs in the tunnel. Main sources of the gaseous PAHs included evaporative emission of fuel, high-temperature and low-temperature combustion of fuel, accounting for 50-51%, 30-36% and 13-20%, respectively. Unburned fuel particles (56.4-78.3%), high-temperature combustion of fuel (9.5-26.1%) and gas-to-particle condensation (12.2-17.5%) were major contributors to the particulate PAHs. The result reflected, to a large extent, PAH emissions from the urban traffic of Shanghai. Improving fuel efficiency of local vehicles will greatly reduce contribution of traffic emission to atmospheric PAHs in urban areas. Source apportionment of PM10 mass was also performed based on the organic component data. The results showed that high-temperature combustion of fuel and gas-to-particle condensation contributed to 15-18% and 7-8% of PM10 mass, respectively, but 55-57% of the particle mass was left unexplained. Although the results from the PCA and PMF models were comparable, the PMF method is recommended for source apportionment of PAHs in real traffic conditions. In addition, the combination of multivariate statistical method and bivariate correlation analysis is a useful tool to comprehensively assess sources of PAHs. © 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81858
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Shanghai Climate Change Response for Urban Areas, College of Environmental Science and Engineering, Tongji University, Shanghai, China; Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, United States
Recommended Citation:
Liu Y,, Wang S,, Lohmann R,et al. Source apportionment of gaseous and particulate PAHs from traffic emission using tunnel measurements in Shanghai, China[J]. Atmospheric Environment,2015-01-01,107