The Potential of Croton lindheimeri to remediate Iron and Strontium contaminated medium
Abstract: Many regions of the United States have been adversely affected by heavy metals. Iron and strontium have been shown to be potential environmental risks to humans and wildlife. Compared to traditional chemical methods, phytoremediation, which uses plants to uptake metals, is a cheaper and more environmentally friendly approach. Ideal plant species should be able to adapt to a wide range of environments and have a large biomass. The species Croton lindheimeri belongs to the Euphorbiaceae family, which has had other genus and species that show the potential for phytoremediation. C. lindheimeri will be germinated in the greenhouse and then transferred to hydroponic media added with different levels of Iron and/or Strontium. After culturing for 20 days, plants will be harvested and separated into roots, shoots, leaves, and flowers (if applicable). The amount of iron plaque on the roots of plants will be determined by cold dithionite–citrate–bicarbonate (DCB) methods. The concentrations of Fe and Sr in the biomass of plants will be assessed by atomic absorption spectroscopy after digestion. The influence of iron plaque to affect Fe and Sr entering the biomass of plants will be determined. The Translocation factor (TF), bioconcentration factor (BCF), and bioaccumulation factor (BAC) will be calculated to evaluate the potential of C. lindheimeri for phytoremediation of iron and strontium contaminated media.
Lin Guo and Elizabeth McElrath*
Judging Forms – Official judges only