DOI: 10.1016/j.atmosenv.2016.12.002
Scopus记录号: 2-s2.0-85003741920
论文题名: Lung deposited surface area in Leicester urban background site/UK: Sources and contribution of new particle formation
作者: Hama S ; M ; L ; , Ma N ; , Cordell R ; L ; , Kos G ; P ; A ; , Wiedensohler A ; , Monks P ; S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 151 起始页码: 94
结束页码: 107
语种: 英语
英文关键词: Aerosol
; Lung deposited surface area
; Seasonal variation
; Traffic emissions
Scopus关键词: Aerosols
; Biological organs
; Carbon
; Particulate emissions
; Wind
; Aerosol particles
; Atmospheric conditions
; Deposited surface areas
; New particle formation
; Seasonal variation
; Traffic emissions
; Traffic-related pollutants
; Wind speed and directions
; Urban growth
; black carbon
; nitrogen oxide
; aerosol
; black carbon
; concentration (composition)
; diurnal variation
; pollutant source
; respiratory disease
; seasonal variation
; surface area
; traffic emission
; urban area
; wind velocity
; aerosol
; air pollutant
; air quality
; Article
; circadian rhythm
; human
; lung deposited surface area
; priority journal
; seasonal variation
; summer
; surface area
; traffic
; United Kingdom
; urban area
; wind
; winter
; England
; Leicester [England]
; Leicester [Leicester (ADS)]
; 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: Lung Deposited Surface Area (LDSA) has been identified as a potential metric for the correlation of a physical aerosol particle properties with health outcomes. Currently, there is little urban LDSA data. As a case study, we investigated measurements of LDSA (alveolar) concentrations in a mid-size European city. LDSA and associated measurements were carried out over 1.5 years at an urban background site in Leicester, UK. Average LDSA concentrations in the cold (November–April) and warm (May–October) seasons of UK were 37 and 23 μm2 cm−3, respectively. LDSA correlates well (R2 = 0.65–0.7, r = 0.77–0.8) with traffic related pollutants, such as equivalent black carbon (eBC) and NOX. We also report for the first time in the UK the correlation between an empirically derived LDSA and eBC. Furthermore, the effect of wind speed and direction on the LDSA was explored. Higher LDSA concentrations are observed at low wind speeds (1–2 m s−1), owing to local traffic emissions. In addition, the diurnal variation of LDSA showed a second peak in the afternoon under warm and relatively clean atmospheric conditions, which can be attributed to photochemical new particle formation (NPF) and growth into the Aitken mode range. These NPF events increased the average background LDSA concentrations from 15.5 to 35.5 μm2 cm−3, although they might not be health-relevant. Overall, the results support the notion that local traffic emissions are a major contributor to observed LDSA concentrations with a clear seasonal pattern with higher values during winter. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82255
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, University of Leicester, Leicester, United Kingdom; Department of Chemistry, School of Science, University of Sulaimani, Sulaimani, Iraq; Leibniz Institute for Tropospheric Research, Permoserstr. 15, Leipzig, Germany; Energy Research Centre of the Netherlands (ECN), Environment & Energy Engineering, Netherlands
Recommended Citation:
Hama S,M,L,et al. Lung deposited surface area in Leicester urban background site/UK: Sources and contribution of new particle formation[J]. Atmospheric Environment,2017-01-01,151