DOI: 10.1016/j.atmosenv.2016.12.010
Scopus记录号: 2-s2.0-85004028266
论文题名: Estimating particulate black carbon concentrations using two offline light absorption methods applied to four types of filter media
作者: Davy P ; M ; , Tremper A ; H ; , Nicolosi E ; M ; G ; , Quincey P ; , Fuller G ; W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 152 起始页码: 24
结束页码: 33
语种: 英语
英文关键词: Black smoke
; Filter absorption
; Reflectance
; Transmittance
Scopus关键词: Bandpass filters
; Electromagnetic wave absorption
; Estimation
; Reflection
; Abatement technologies
; Absorption measurements
; Atmospheric particulate
; Black smoke
; Epidemiological studies
; Mass extinction coefficients
; Measurement methods
; Transmittance
; Light absorption
; black carbon
; absorption
; black carbon
; concentration (composition)
; epidemiology
; estimation method
; filter
; health impact
; particulate matter
; pollution exposure
; reflectance
; smoke
; transmittance
; air analysis
; air sampling
; Article
; England
; histogram
; light absorption
; light exposure
; mass extinction
; particulate matter
; priority journal
; time series analysis
; England
; London [England]
; United Kingdom
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: Atmospheric particulate black carbon has been linked to adverse health outcomes. Additional black carbon measurements would aid a better understanding of population exposure in epidemiological studies as well as the success, or otherwise, of relevant abatement technologies and policies. Two light absorption measurement methods of particles collected on filters have been applied to four different types of filters to provide estimations of particulate black carbon concentrations. The ratio of transmittance (lnI0/I) to reflectance (lnR0/R) varied by filter type and ranged from close to 0.5 (as expected from simple theory) to 1.35 between the four filter types tested. The relationship between light absorption and black carbon, measured by the thermal EC(TOT) method, was nonlinear and differed between filter type and measurement method. This is particularly relevant to epidemiological studies that use light absorption as an exposure metric. An extensive archive of filters was used to derive loading factors and mass extinction coefficients for each filter type. Particulate black carbon time series were then calculated at locations where such measurements were not previously available. When applied to two roads in London, black carbon concentrations were found to have increased between 2011 and 2013, by 0.3 (CI: −0.1, 0.5) and 0.4 (CI: 0.1, 0.9) μg m−3 year−1, in contrast to the expectation from exhaust abatement policies. New opportunities using archived or bespoke filter collections for studies on the health effects of black carbon and the efficacy of abatement strategies are created. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82218
Appears in Collections: 气候变化事实与影响
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作者单位: MRC PHE Centre for Environment and Health, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, United Kingdom; Environment Division, National Physical Laboratory, Hampton Road, Teddington, Middlesex, United Kingdom
Recommended Citation:
Davy P,M,, Tremper A,et al. Estimating particulate black carbon concentrations using two offline light absorption methods applied to four types of filter media[J]. Atmospheric Environment,2017-01-01,152