globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2015.03.009
Scopus记录号: 2-s2.0-84924409100
论文题名:
Heterogeneity of passenger exposure to air pollutants in public transport microenvironments
作者: Yang F; , Kaul D; , Wong K; C; , Westerdahl D; , Sun L; , Ho K; -F; , Tian L; , Brimblecombe P; , Ning Z
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 109
起始页码: 42
结束页码: 51
语种: 英语
英文关键词: Black carbon ; Bus cabins ; Bus terminal ; CO ; PM2.5 ; Roadside bus stop ; Subway platform ; Ultrafine particles
Scopus关键词: Air pollution ; Bus terminals ; Bus transportation ; Buses ; Carbon ; Carbon monoxide ; Cobalt ; Mass transportation ; Particles (particulate matter) ; Railroads ; Roads and streets ; Roadsides ; Transportation ; Black carbon ; Bus stop ; Particle concentrations ; Pollutant concentration ; Public transport systems ; Time-integrated exposure ; Traffic-related pollutants ; Ultrafine particle ; Pollution ; black carbon ; carbon monoxide ; atmospheric pollution ; black carbon ; bus transport ; epidemiology ; health impact ; heterogeneity ; indoor air ; particle size ; particulate matter ; pollution exposure ; public transport ; traffic emission ; urbanization ; air monitor ; air pollutant ; Article ; environmental exposure ; exhaust gas ; Hong Kong ; human ; microenvironment ; priority journal ; residential area ; traffic and transport ; urban area ; China ; Hong Kong
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: Epidemiologic studies have linked human exposure to pollutants with adverse health effects. Passenger exposure in public transport systems contributes an important fraction of daily burden of air pollutants. While there is extensive literature reporting the concentrations of pollutants in public transport systems in different cities, there are few studies systematically addressing the heterogeneity of passenger exposure in different transit microenvironments, in cabins of different transit vehicles and in areas with different characteristics. The present study investigated PM2.5 (particulate matter with aerodynamic diameters smaller than 2.5μm), black carbon (BC), ultrafine particles (UFP) and carbon monoxide (CO) pollutant concentrations in various public road transport systems in highly urbanized city of Hong Kong. Using a trolley case housing numerous portable air monitors, we conducted a total of 119 trips during the campaign. Transit microenvironments, classified as 1). busy and secondary roadside bus stops; 2). open and enclosed termini; 3). above- and under-ground Motor Rail Transport (MTR) platforms, were investigated and compared to identify the factors that may affect passenger exposures. The pollutants inside bus and MTR cabins were also investigated together with a comparison of time integrated exposure between the transit modes. Busy roadside and enclosed termini demonstrated the highest average particle concentrations while the lowest was found on the MTR platforms. Traffic-related pollutants BC, UFP and CO showed larger variations than PM2.5 across different microenvironments and areas confirming their heterogeneity in urban environments. In-cabin pollutant concentrations showed distinct patterns with BC and UFP high in diesel bus cabins and CO high in LPG bus cabins, suggesting possible self-pollution issues and/or penetration of on-road pollutants inside cabins during bus transit. The total passenger exposure along selected routes, showed bus trips had the potential for higher integrated passenger exposure compared to MTR trips. The present study may provide useful information to better characterize the distribution of passenger exposure pattern in health assessment studies and the results also highlight the need to formulate exposure reduction based air policies in large cities. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81813
Appears in Collections:气候变化事实与影响

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作者单位: School of Energy and Environment, City University of Hong Kong, Hong Kong; Guy Carpenter Asia-Pacific Climate Impact Centre, City University of Hong Kong, Hong Kong; The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong; School of Public Health, The University of Hong Kong, Hong Kong

Recommended Citation:
Yang F,, Kaul D,, Wong K,et al. Heterogeneity of passenger exposure to air pollutants in public transport microenvironments[J]. Atmospheric Environment,2015-01-01,109
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