Differential uptake of silver, copper and zinc suggests complementary species-specific phytoextraction potential
| Autor: | Dominic Desjardins, Frederic E. Pitre, W. Guidi Nissim, Michel Labrecque |
|---|---|
| Přispěvatelé: | Desjardins, D, Pitre, F, GUIDI NISSIM, W, Labrecque, M |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Festuca
Willow Silver chemistry.chemical_element Plant Science Zinc 010501 environmental sciences 01 natural sciences Environmental Salix miyabeana Species Specificity Botany Soil Pollutants Environmental Chemistry Soil Pollutant Medicago sativa Environmental Restoration and Remediation 0105 earth and related environmental sciences biology Salix 04 agricultural and veterinary sciences biology.organism_classification Pollution Mustard Plant Phytoremediation Biodegradation Environmental chemistry Agronomy 040103 agronomy & agriculture Biodegradation 0401 agriculture forestry and fisheries Festuca arundinacea Copper |
| Popis: | The aim of our study, conducted as a pot experiment, was to assess the potential of willow (Salix miyabeana), alfalfa (Medicago sativa), tall fescue (Festuca arundinacea), and Indian mustard (Brassica juncea) to remediate two brownfield soils differentially contaminated with Ag, Cu and Zn (up to 113.60, 47.50, and 117.00 mg kg(-1) respectively). While aboveground Ag accumulation was highest in B. juncea (4.60 ± 2.58 mg kg(-1)), lower levels were also measured in M. sativa and F. arundinacea. Cu accumulation was observed in all species, but only in underground parts, and was highest in F. arundinacea (269.20 ± 74.75 mg kg(-1)), with a bioconcentration factor of 13.85. Salix miyabeana was found to have the highest Zn aerial tissue concentration (119.96 ± 20.04 mg kg(-1)). Because of its high Ag uptake, the remediation potential of B. juncea should be evaluated more extensively on the site from which we excavated the soil for this study. Given the multiple forms of contamination on the site and the differential specie-related uptake evident in our findings, we hypothesize that an optimal plantation allowing expression of complementary remediation functions would include B. juncea for extraction of Ag, in combination with F. arundinacea for stabilization of Cu and S. miyabeana for extraction of Zn. |
| Databáze: | OpenAIRE |
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