Book chapter
Atmospheric Concentrations and Vertical Fluxes of Persistent Organic Pollutants from Milwaukee, Wisconsin
Global Threats to Large Lakes: Managing in an Environment of Instability and Unpredictability, pp.235-235
06/01/2003
Abstract
In June of 2001 a five-day investigation into the contribution of airborne toxic pollutants by the city of Milwaukee was conducted. Gas and particulate phase atmospheric samples, along with on-site meteorological conditions, were collected on the roof of the Great Lakes WATER Institute. The gas phase PCB concentration during this study was found to be 1.94 plus or minus 0.74 ng m super(-3), while the particulate phase was reported at 0.047 plus or minus 0.023 ng m super(-3). The net gas flux into Lake Michigan from Milwaukee was estimated to be 223 plus or minus 104 ng m super(-2) d super(-1). Additionally, data describing the average particle size distribution measured in Milwaukee was combined with particulate phase PCB concentrations. This information was then association with a size-specific particulate deposition model in order to predict dry deposition of PCBs. Particulate-bound PCB fluxes into Lake Michigan from the city of Milwaukee were found to average at 41.4 plus or minus 35.1 ng m super(-2) d super(-1). The results from this study concluded that Milwaukee is a significant source of PCBs to Lake Michigan, on the same order of magnitude as the city of Chicago. This study also demonstrates the possible significance of dry deposition of PCBs associated with large atmospheric particles, in addition to the dominance of the gas-phase control pertaining to the long-range transport of PCBs in temperate climates.
Details
- Title: Subtitle
- Atmospheric Concentrations and Vertical Fluxes of Persistent Organic Pollutants from Milwaukee, Wisconsin
- Creators
- D M WethingtonK C Hornbuckle
- Resource Type
- Book chapter
- Publication Details
- Global Threats to Large Lakes: Managing in an Environment of Instability and Unpredictability, pp.235-235
- Language
- English
- Date published
- 06/01/2003
- Academic Unit
- Occupational and Environmental Health; Civil and Environmental Engineering
- Record Identifier
- 9983997429502771
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