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Título

The Effects of Copper and Lead on Growth and Zinc Accumulation of Thlaspi Caerulescens J. and C. Presl: Implications for Phytoremediation of Contaminated Soils

AutorWalker, David J.; Bernal Calderón, M. Pilar
Palabras claveContamination
Copper
Lead
Phytoextraction
Thlaspi caerulescens J. and C. Presl
Zinc accumulation
Fecha de publicaciónene-2004
EditorSpringer
CitaciónWater, Air, & Soil Pollution 151(1-4): 361-372 (2004)
ResumenThlaspi caerulescens J. and C. Presl is a Zn-hyperaccumulatingplant which has aroused considerable interest with respect to its possible use for phytoremediation of Zn-contaminated soils. In this work, a British population of T. caerulescens, from a soil which was found to have relatively high concentrations of water-extractable Cu (0.22 mg L-1), Pb (0.99 mg L-1) and Zn (6.49 mg L-1), was studied. Its ability to grow and accumulate Zn from hydroponic nutrient solution in the presence of elevated concentrations of Cu and/or Pb was investigated. The chosen concentrations of Cu, Pb and Zn were based on reported water-soluble concentrations of these heavy metals in contaminated soils. When supplied with 32.7 mg L-1 Zn, plants accumulated 19 780 mg kg-1 Zn in their shoot dry matter. This concentration declined by 9.3, 87 and 84% respectively when 5.0 mg L-1 Pb, 1.0 mg L-1 Cu or 2.0 mg L-1 Cu were included in the nutrient solution. Despite the apparent adaptation of this population of T. caerulescens to a Zn/Pb/Cu-contaminated soil, these Cu treatments strongly inhibited growth, but the Pb treatment did not affect growth significantly.
Descripción12 pages, 2 tables, 3 figures.
Versión del editorhttp://dx.doi.org/10.1023/B:WATE.0000009901.89000.40
URIhttp://hdl.handle.net/10261/16559
DOI10.1023/B:WATE.0000009901.89000.40
ISSN1573-2932 (Online)
0049-6979 (Print)
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