Soil-plant-animal relationships and geochemistry of selenium in the Western Phosphate Resource Area (United States): A review
| Autor: | Jessica E. Favorito, Matthew J. Eick, Nathan Hankes, Paul R. Grossl, Thomas Zane Davis |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology Geochemistry chemistry.chemical_element Weathering 02 engineering and technology 010501 environmental sciences 01 natural sciences Mining Phosphates Mining geology Selenium Soil Land reclamation Environmental Chemistry Animals Soil Pollutants Hyperaccumulator 0105 earth and related environmental sciences Public Health Environmental and Occupational Health Trace element General Medicine General Chemistry Pollution Soil contamination United States 020801 environmental engineering Overburden chemistry Environmental science |
| Zdroj: | Chemosphere. 266 |
| ISSN: | 1879-1298 |
| Popis: | While naturally found in trace quantities, several regions throughout the world have been designated as “seleniferous” or containing an overabundance of the trace element, selenium (Se), in soil. In particular, portions of the Western Phosphate Resource Area (WPRA) of the United States are considered seleniferous, notably due to past phosphate mining reclamation practices that have promoted Se release and accumulation in soil from weathering overburden waste rock. Concern over Se soil contamination in this region has been attributed to its high levels (ranging from 2.7 to 435 mg Se kg−1 soil), bioavailability, and subsequent hyperaccumulation in vegetation at toxic concentrations (exceeding 10,000 mg Se kg−1 plant tissue). The Se hyperaccumulator, western aster (Symphyotrichum ascendens (Lindl.)), is responsible for the vast majority of acute selenium livestock poisonings and fatalities throughout the region. This inherent bioavailability is largely controlled by soil redox chemistry and sorptive processes. The purpose of this review is to integrate information related to the unique site history of the WPRA from onset mining to current Se problems. This review will provide current details and connection of WPRA mining geology, soil Se geochemistry, plant hyperaccumulation, and related livestock fatalities. Soil remediation strategies will also be discussed along with their applicability and viability in this particular anthropogenically-influenced seleniferous region. |
| Databáze: | OpenAIRE |
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