Trace elements in wild grasses: a phytoavailability study on a remediated field
- 6 February 2008
- journal article
- Published by Springer Science and Business Media LLC in Environmental Geochemistry and Health
- Vol. 30 (2), 109-114
- https://doi.org/10.1007/s10653-008-9135-3
Abstract
There have been significant efforts to establish a widely usable method for the prediction of trace element bioavailability in soil. In this work, we used extraction with 0.01 M CaCl2 and 0.05 M ethylenediaminetetraacetic acid (EDTA) to estimate bioavailable concentrations of As, Cd, Cu, Pb, and Zn in a soil moderately contaminated with trace elements 1 and 2 years after the application of three amendments. The experiment took place in a field plot of a soil affected by the toxic spill of the Aznalcóllar mine. Four treatments were established: three with amendments (biosolid compost, sugar beet lime, and a combination of leonardite plus sugar beet lime) and a control without amendment. Trace element concentrations of two representative species in each year (Lamarckia aurea and Poa annua in 2004 and Lamarckia aurea and Bromus rubens in 2005) were analyzed. The results showed a positive effect of the amendments both on soil and vegetation. Trace element concentrations in plants growing in the amended subplots were lower than those in plants from nonamended subplots. As a rule, concentrations of CaCl2-soluble Cd, Cu, and Zn in soil were positively correlated with trace elements in plants, whereas EDTA extraction was scarcely correlated with plant concentration. For species of grasses, especially L. aurea, CaCl2 seems to be a more suitable extractant to predict trace element bioavailability in this contaminated soil.Keywords
This publication has 17 references indexed in Scilit:
- Arsenic in soils and plants of woodland regenerated on an arsenic-contaminated substrate: A sustainable natural remediation?Science of The Total Environment, 2007
- Spatial variability of the chemical characteristics of a trace-element-contaminated soil before and after remediationGeoderma, 2005
- Soil–plant transfer of trace elements—an environmental issueGeoderma, 2004
- Trace Elements in Terrestrial EnvironmentsPublished by Springer Science and Business Media LLC ,2001
- Distribution of Vehicular Lead in Roadside Soils of Major Roads of Brisbane, AustraliaWater, Air, & Soil Pollution, 2000
- The mine tailing accident in AznalcollarScience of The Total Environment, 1999
- Chemical Aspects of Heavy Metal Solubility with Reference to Sewage Sludge Amended SoilsInternational Journal of Environmental Analytical Chemistry, 1995
- The behaviour of heavy metals in sewage sludge-amended soilsScience of The Total Environment, 1991
- Toxic Element Accumulation in Soils and Crops: Protecting Soil Fertility and Agricultural Food-ChainsPublished by Springer Science and Business Media LLC ,1989
- The Contamination of Plants and Soils with Heavy Metals and the Transport of Metals in Terrestrial Food ChainsPublished by Springer Science and Business Media LLC ,1984