Near roadway concentrations of organic source markers |
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| Authors: | David A Olson Stephen R McDow |
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| Institution: | 1. Environmental Engineering Laboratory, Departament d''Enginyeria Quimica, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Catalonia, Spain;2. Institute of Environmental Assessment and Water Research, CSIC, Jordi Girona 18, 08034 Barcelona, Catalonia, Spain;3. Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Sant Llorenç 21, 43201 Reus, Catalonia, Spain;1. CESAM, Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal;2. CIEMAT, Chemistry Division, Technology Department, Av. Complutense 22, 28040 Madrid, Spain;3. CIEMAT, Atmospheric Pollution Unit, Environment Department, Av. Complutense 22, 28040 Madrid, Spain |
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| Abstract: | Concentrations of elemental carbon (EC), organic carbon (OC), and 33 organic source markers (12 alkanes, 18 polycyclic aromatic hydrocarbons and ketones, and 3 hopanes) are reported near a highway in Raleigh, NC with an annual average daily traffic count of approximately 125,000 vehicles. Daily samples (24-h) were collected at two locations, one approximately 10 m and the other 275 m perpendicular from the road. Concentrations of OC were similar between near (mean = 7.6 μg m?3) and far (8.0 μg m?3) locations, but concentrations of most organic species at the near site were between 1.5 and 2 times higher than those at the far site. |
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