Risk assessment test for lead bioaccessibility to waterfowl in mine-impacted soils
Journal of Environmental Quality
6526_Furman.pdf
By: O. Furman, D.G. Strawn, Gary H. Heinz, and B. Williams
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Abstract
Due to variations in soil physicochemical properties, species physiology, and contaminant speciation, Pb toxicity is difficult to evaluate without conducting in vivo dose-response studies. Such tests, however, are expensive and time consuming, making them impractical to use in assessment and management of contaminated environments. One possible alternative is to develop a physiologically based extraction test (PBET) that can be used to measure relative bioaccessibility. We developed and correlated a PBET designed to measure the bioaccessibility of Pb to waterfowl (W-PBET) in mine-impacted soils located in the Coeur d'Alene River Basin, Idaho. The W-PBET was also used to evaluate the impact of P amendments on Pb bioavailability. The W-PBET results were correlated to waterfowl-tissue Pb levels from a mallard duck [Anas platyrhynchos (L.)] feeding study. The W-PBET Pb concentrations were significantly less in the P-amended soils than in the unamended soils. Results from this study show that the W-PBET can be used to assess relative changes in Pb bioaccessibility to waterfowl in these mine-impacted soils, and therefore will be a valuable test to help manage and remediate contaminated soils.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Risk assessment test for lead bioaccessibility to waterfowl in mine-impacted soils |
| Series title | Journal of Environmental Quality |
| Volume | 35 |
| Issue | 2 |
| Year Published | 2006 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 450-458 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Environmental Quality |
| First page | 450 |
| Last page | 458 |