2006/02/02 by Olha Furman, Daniel G. Strawn, Gary H. Heinz +1 · 36 citations
Chemistry · Environmental Science · #Bioavailability #Biology #Chemistry #Contamination #Ecology #Environmental Toxicology and Ecotoxicology #Environmental chemistry #Environmental science #Extraction (chemistry) #Heavy Metal Exposure and Toxicity #Heavy metals in environment #Soil science #Soil water #Waterfowl
paper · doi:10.2134/jeq2005.0316
published in Journal of Environmental Quality 35(2), 450-458 (Wiley)
openalex publication_date 2006/02/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.