Book chapter
Atmospheric deposition of persistent organic pollutants: results of the Lake Michigan mass balance study
Abstracts from the 44th Conference on Great Lakes Research, June 10-14, 2001. Great Lakes Science: Making it Relevant, pp.54-55
01/01/2001
Abstract
The atmospheric data and model used for the Lake Michigan Mass Balance Study indicate that deposition of PCBs to Lake Michigan is highly variable over space and time, especially for gas-phase deposition. The LMMB atmospheric modeling shows that the Chicago region contributes 2 to 20% of the total deposition of gas-phase PCB to the lake, depending on the congener and time of year. For an annual year the total gas-phase deposition of capital sigma PCBs (sum of 98 congener groups) is similar to 3,200 kg and the Chicago contribution is similar to 330 kg. The Chicago source behaves like a non-point release by volatilization from contaminated sites open to the atmosphere and subject to the same temperature fluctuations as the air temperature. Deposition of PCBs in precipitation and on fine particles (< 10 mu m) are each about 100 kg/yr. We also considered the role of large particles and estimated that this source could contribute an additional 200 kg/yr, which would be localized to coastal regions and are greatest near urban areas. Here we discuss the implications of this work on control of PCBs emissions and deposition.
Details
- Title: Subtitle
- Atmospheric deposition of persistent organic pollutants: results of the Lake Michigan mass balance study
- Creators
- K C HornbuckleJ V DepintoM L GreenS M MillerJ J Bogdan
- Resource Type
- Book chapter
- Publication Details
- Abstracts from the 44th Conference on Great Lakes Research, June 10-14, 2001. Great Lakes Science: Making it Relevant, pp.54-55
- Language
- English
- Date published
- 01/01/2001
- Academic Unit
- Occupational and Environmental Health; Civil and Environmental Engineering
- Record Identifier
- 9983997972202771
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