Polychlorinated biphenyls (PCB) and dichlorodiphenyltrichloroethane (DDE) air concentrations in the Lake Ontario region: Trends and potential sources |
| |
| Authors: | Hyun-Deok Choi James J. Pagano Michael S. Milligan Philip K. Hopke Steven Skubis Thomas M. Holsen |
| |
| Affiliation: | 1. Department of Civil and Environmental Engineering, Clarkson University, Potsdam, NY 13699-5710, USA;2. Environmental Research Center, Department of Chemistry, 310D Piez Hall, Takamine St., SUNY Oswego, Oswego, NY 13126, USA;3. Department of Chemistry, 218 Houghton Hall, 280 Central Avenue, SUNY Fredonia, Fredonia, NY 14063, USA;4. Department of Chemical and Biomolecular Engineering, Center for Air Resources Engineering and Science, Clarkson University, Potsdam, NY 13699-5708, USA;5. Department of Earth Sciences, SUNY Oswego, Oswego, NY 13126, USA;1. New York State Department of Environmental Conservation, United States;2. State University of New York at Albany, United States;1. Department of Anatomy, Physiology and Pharmacology, Auburn AL 36849, United States;2. Department of Pharmacal Sciences, Auburn University, Auburn AL 36849, United States;3. Department of Pathobiology, Auburn University, Auburn AL 36849, United States;1. Department of Pathology, Federal University of Sao Paulo, UNIFESP, SP, Brazil;2. Department of Biosciences, Federal University of Sao Paulo, UNIFESP, SP, Brazil;1. Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA, USA;2. Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA, USA;3. Atlantic Ecology Division, Office of Research and Development, US Environmental Protection Agency, Narragansett, RI, USA;4. Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California Davis, Davis, CA, USA;5. The Medical Investigations of Neurodevelopmental Disorders (MIND) Institute, University of California Davis Medical Center, Sacramento, USA |
| |
| Abstract: | Airborne particle and gas samples were collected approx every 12 days from April 2002 to June 2006 at the Sterling Nature Center located near the southeast corner of Lake Ontario. These samples were analyzed for polychlorinated biphenyls (PCBs) and dichlorodiphenyltrichloroethane (DDE). Clausius-Clapeyron (C–C) regression analyses of PCBs and DDE yielded moderate correlations (r2 = 0.54, p < 0.001; r2 = 0.74, p < 0.001, respectively) indicating that much of the variations in concentrations can be explained by temperature. Back trajectory analysis indicated that the most important factors driving unusually high PCB partial pressures relative to those predicted by the C–C regression were slow wind speeds and winds generally from the southwest. This combination, which occurred frequently in 2004, increased contact of the air with contaminated upwind surfaces with minimum dilution. Hybrid receptor modeling (Potential Source Contribution Function (PSCF)) results for the total PCBs identified the midwestern US region that contains the urban areas of southern Indiana (IN), southwestern Ohio (OH), and northern Kentucky (KY) having the highest PSCF values. In general urban areas like Chicago (IL), Detroit (MI), Cleveland (OH), St. Louis (MO), and Nashville (TN) also had significant possibilities. In contrast, the PSCF modeling for DDE identified northern Alabama as the area with the highest probability where DDT was applied to cotton fields. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
