DOI: 10.1016/j.atmosenv.2014.01.021
Scopus记录号: 2-s2.0-84897645554
论文题名: On-road black carbon instrument intercomparison and aerosol characteristics by driving environment
作者: Holder A ; L ; , Hagler G ; S ; W ; , Yelverton T ; L ; B ; , Hays M ; D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 88 起始页码: 183
结束页码: 191
语种: 英语
英文关键词: Light absorption
; Mobile source
; Size distribution
; Ultrafine particles
Scopus关键词: Aerosol characteristics
; Driving environment
; High spatial resolution
; High-time resolution
; Mass median diameters
; Mobile measurements
; Mobile sources
; Ultrafine particle
; Automobile drivers
; Light absorption
; Photometers
; Photometry
; Roads and streets
; Size distribution
; Soot
; Instruments
; black carbon
; accuracy assessment
; aerosol
; black carbon
; concentration (composition)
; mapping
; particle size
; pollution exposure
; soot
; spatial analysis
; aerosol
; aethalometer
; analytical equipment
; article
; concentration (parameters)
; correlation analysis
; highway
; particle size
; photo acoustic soot spectrometer
; photometer
; pollutant
; priority journal
; single particle soot photometer
; spectrometer
; traffic and transport
; ultrafine particle
; urban area
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: Large spatial variations of black carbon (BC) concentrations in the on-road and near-road environments necessitate measurements with high spatial resolution to assess exposure accurately. A series of measurements was made comparing the performance of several different BC instruments (Single Particle Soot Photometer, Photo-Acoustic Soot Spectrometer, and Aethalometer) for high time resolution mobile measurements, capable of mapping spatial gradients. All instruments were highly correlated at high time resolution (r2=0.80-0.89 at a 2-sresolution), however the slope ranged from 0.52 to 1.03, with the Single Particle Soot Photometer (SP2) consistently reporting the lowest BC concentrations. BC and ultrafine particle (UFP) concentrations were two-fold higher on the highway compared to surrounding roads with lower traffic counts. The BC size distribution had a mass median diameter of approximately 120nm, which was smaller and less coated than aged urban BC. Mean UFP and BC concentrations were 2 and 1.4 times greater, respectively, during free flowing traffic on the highway compared with times when there was stop-and-go congestion, providing evidence that transit time is not a good predictor of BC or UFP exposure. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80687
Appears in Collections: 气候变化事实与影响
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作者单位: National Risk Management Laboratory, Office of Research and Development, United States Environmental Protection Agency, 109 T.W. Alexander Dr. RTP, NC 27709, United States
Recommended Citation:
Holder A,L,, Hagler G,et al. On-road black carbon instrument intercomparison and aerosol characteristics by driving environment[J]. Atmospheric Environment,2014-01-01,88