DOI: 10.1016/j.atmosenv.2014.11.053
Scopus记录号: 2-s2.0-84983183910
论文题名: Temporal and spatial variation of the metal-related oxidative potential of PM2.5 and its relation to PM2.5 mass and elemental composition
作者: Yang A ; , Hellack B ; , Leseman D ; , Brunekreef B ; , Kuhlbusch T ; A ; J ; , Cassee F ; R ; , Hoek G ; , Janssen N ; A ; H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 102 起始页码: 62
结束页码: 69
语种: 英语
英文关键词: ESR
; Metal composition
; Oxidative potential
; Particulate matter
; Spatial variation
; Temporal variation
Scopus关键词: Magnetic moments
; Paramagnetic resonance
; Urban growth
; Metal composition
; Oxidative potential
; Particulate Matter
; Spatial variations
; Temporal variation
; Electron spin resonance spectroscopy
; hydrogen peroxide
; hydroxyl radical
; metal
; electron spin resonance
; epidemiology
; hydrogen peroxide
; hydroxyl radical
; metal
; oxidation
; particle size
; particulate matter
; spatiotemporal analysis
; urban area
; Article
; electron spin resonance
; environmental exposure
; long term exposure
; Netherlands
; oxidation reduction potential
; particulate matter
; priority journal
; quality control
; spatiotemporal analysis
; Netherlands
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: Oxidative potential (OP) of particulate matter (PM) has been proposed as a more health relevant metric than PM mass. However, little is known about the temporal and spatial variation of OP, which is crucial if OP were to be used as an exposure metric in epidemiological studies. We studied OP on routinely collected PM2.5 samples (every 6th day) from three regional, five urban background, and three street sites over a one-year period across the Netherlands. OP was measured as the ability to generate hydroxyl radicals in the presence of hydrogen peroxide using the electron spin resonance (OPESR).OPESR correlated poorly with PM2.5 mass both spatially (Spearman's rs = 0.29) and temporally (median rs = 0.34). The temporal correlations across sites for OPESR were moderate (median rs = 0.50) compared to PM2.5 (median rs = 0.87), suggesting that exposure misclassification is higher when using OPESR as an exposure metric in time series studies. Street/urban background and street/regional background ratios for OPESR were 1.4 and 2.4 respectively; higher than for PM2.5 (ratio of 1.1 for both street/urban background and street/regional background).This large scale, nationwide study found that PM2.5 correlated poorly with OPESR in space and time. Spatial contrasts were much larger for OPESR than for PM2.5, which offers the possibility to use OPESR to assess long-term exposure health effects. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82111
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute for Public Health and the Environment (RIVM), P.O. Box 1, Bilthoven, Netherlands; Institute for Risk Assessment Sciences, Division Environmental Epidemiology, Utrecht University, P.O. Box 80.178, Utrecht, Netherlands; Air Quality and Sustainable Nanotechnology, Institute of Energy and Environmental Technology (IUTA) e.V., Blierheimer Str. 60, Duisburg, Germany; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, Netherlands; Center for Nanointegration Duisburg-Essen (CENIDE), University Duisburg-Essen, Carl-Benz-Straße 199, Duisburg, Germany
Recommended Citation:
Yang A,, Hellack B,, Leseman D,et al. Temporal and spatial variation of the metal-related oxidative potential of PM2.5 and its relation to PM2.5 mass and elemental composition[J]. Atmospheric Environment,2015-01-01,102