Journal article
The Effect of a Large Resuspension Event in Southern Lake Michigan on the Short-term Cycling of Organic Contaminants
Journal of Great Lakes research, Vol.28(3), pp.338-351
2002
DOI: 10.1016/S0380-1330(02)70589-3
Abstract
In January and March, 1998, a series of intense, northerly wind-driven storms suspended sediment over the entire coastline of the southern basin of Lake Michigan. The effect of large scale resuspension on organic contaminant cycling was investigated using a two-pronged sample collection strategy that included analysis of settling sediment trap material and discrete air and water samples collected before and after a major resuspension event. It was found that major resuspension events result in a large flux of contaminants. For example, 6.2 ng/cm
2 ΣPCB (sum of 89 congener peaks) and 175 ng/cm
2 ΣPAHs (sum of 31 compounds) fell through the water column in the southern basin between November and May but almost half of that occurred in the month of March after a series of intense storms induced a largescale resuspension event in that month. Assuming the concentration of contaminants in settling sediments is similar throughout the basin, the March event brought ∼400 kg of ΣPCBs and ∼13,000 kg ΣPAHs into the water column. Furthermore, the data indicate that concentrations of dissolved phase ΣPCB and ΣPAHs declined significantly (α
=
0.05) after the event and after resuspended sediment had settled from the surface waters. As a result of the depressed dissolved concentrations at the surface, the potential for gas-phase input to the lake increases on the southwestern coastal region near Chicago, IL and Gary, IN. The potential input of gas-phase contaminants was 8 kg for ΣPCBs and 2,200 kg for ΣPAHs over the 40-day lifetime of the near-shore event.
Details
- Title: Subtitle
- The Effect of a Large Resuspension Event in Southern Lake Michigan on the Short-term Cycling of Organic Contaminants
- Creators
- Jerel J Bogdan - Malcolm Pirnie, Inc., Orchard Park, New York 14127Judith W Budd - Geological Engineering and Sciences, Michigan Technological University, Houghton, Michigan 49931Brian J Eadie - Great Lakes Environmental Research Laboratory (NOAA), Ann Arbor, Michigan 48105Keri C Hornbuckle - Dept. Civil and Environmental Engineering, University of Iowa, Iowa City, Iowa 52242
- Resource Type
- Journal article
- Publication Details
- Journal of Great Lakes research, Vol.28(3), pp.338-351
- DOI
- 10.1016/S0380-1330(02)70589-3
- ISSN
- 0380-1330
- Publisher
- Elsevier B.V
- Language
- English
- Date published
- 2002
- Academic Unit
- Civil and Environmental Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997972602771
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