Seasonal Variability in PAH Concentrations in Urban Runoff Discharged to Biscayne National Park and Aquatic Preserve: Initial ResultsProceedings of the 3rd International Subtropical Cities Conference, Subtropical Cities 2011: Beyond Climate Change (2011)
AbstractPolycyclic aromatic hydrocarbons (PAHs) emitted from vehicle exhaust or released as a result of spillage, accumulate over impervious surfaces in urban environments, and have been shown to accumulate in coastal estuarine and marine sediments. Climatic conditions in subtropical areas associated with prolonged dry seasons may exacerbate the problems related to PAHs and other pollutant discharges as during such periods without or with very little precipitation various pollutants accumulate over paved surfaces. Previous studies have documented the presence of PAHs in the sediments of the canals draining into Biscayne Bay. The chronic release of low-‐level PAHs contained in urban runoff may be responsible for the delivery of noticeable amounts of oil and grease to the aquatic environment of the Bay and thus requires further investigation. Runoff samples were collected from a site with high annual average daily traffic along a major transportation artery. The initial results indicate that high-‐molecular-‐weight PAHs which originate in vehicle exhaust emissions dominate PAH concentrations in urban runoff. Further sampling will determine how these concentrations vary with seasonal changes in precipitation patterns.
- urban runoff,
- vehicle exhaust emissions,
- subtropical climate,
- Biscayne Bay
Citation InformationDiana Mitsova, Jaap Vos and Inna Stafeychuk. "Seasonal Variability in PAH Concentrations in Urban Runoff Discharged to Biscayne National Park and Aquatic Preserve: Initial Results" Proceedings of the 3rd International Subtropical Cities Conference, Subtropical Cities 2011: Beyond Climate Change (2011)
Available at: http://works.bepress.com/jaap_vos/2/