Determinants of fine particle (PM2.5) personal exposure levels in transport microenvironments,London, UK |
| |
| Institution: | 1. Department of Environment and Energy Engineering, Chonnam National University, 77 Yongbong-ro, Buk-ku, Gwangju 500-757, South Korea;2. Department of Health Management, Kyung-in Women''s University, South Korea;3. Department of Atmospheric & Environmental Sciences, Gangneung-Wonju National University, South Korea;1. School of Public and International Affairs, Virginia Tech, 140 Otey Street, Blacksburg, VA 24061, USA;2. Department of Civil, Environmental, and Geo- Engineering, University of Minnesota, 500 Pillsbury Drive SE, Minneapolis, MN 55455, USA;1. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;2. Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;3. Department of Civil, Construction and Environmental Engineering, North Carolina State University, Campus Box 7908, Raleigh, NC 27695-7908, United States;1. National Atmospheric Research Laboratory, Gadanki, Andhra Pradesh, 517112, India;2. Centre for Atmospheric and Climate Physics Research (CACP), University of Hertfordshire College Lane, Hatfield, AL10 9AB, UK;3. Finnish Meteorological Institute, Erik Palmenin aukio 1, P.O.Box 503, FI-00101, Helsinki, Finland;1. School of GeoSciences, University of Edinburgh, Edinburgh, UK;2. Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, UK;3. Met Office Hadley Centre, FitzRoy Road, Exeter, UK;4. Institute of Occupational Medicine, Edinburgh, UK;5. Met Office, FitzRoy Road, Exeter, UK;6. School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, UK;7. European Centre for Environment and Human Health, University of Exeter Medical School, UK;8. Environmental Change Institite, University of Oxford, UK |
| |
| Abstract: | A series of field studies were carried out in London, UK, during 1999–2000 in which over 400 fine particle (PM2.5) personal exposure level measurements were taken for journeys in bicycle, bus, car and underground rail transport microenvironments. This was the first comprehensive PM2.5 personal exposure study of transport users. Both a fixed-route multi-transport mode study and a study of cyclists’ commuter journeys were undertaken. Subsequent to these field studies regression modelling of possible influencing factors of these exposure levels was carried out. Meteorological variables, traffic density, mode and route were considered; the relationships of personal exposure levels with fixed site monitor (FSM) concentrations, and of the FSM concentrations with the potential predictor variables, were also investigated. This analysis of the determinants of transport user exposure to PM2.5 in London, UK, showed that wind speed had a significant influence on personal exposure levels, though explained only up to 20% of the variability of road transport user exposure levels. The occurrence of higher wind speeds was strongly associated with a decrease in personal exposure levels; a 1.5–2.0 fold difference in exposure level concentrations was estimated between the 10th and 90th percentiles of wind speed. Route was a significant factor, whilst mode was not a significant factor in the street microenvironment (between bicycle, bus and car modes); models incorporating route and mode, as well as wind speed, explained approximately 35% of the variability in PM2.5 exposure levels. Personal exposure levels were reasonably correlated with urban background FSM concentrations, for fixed-route road mode (bicycle, bus and car) exposure level concentrations, r=0.27 (p<0.01) and for commuter cyclists’ exposure level concentrations r=0.58 (p<0.01). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
