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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18130

Title: Wild Flora of Mine Tailings: Perspectives for Use in Phytoremediation of Potentially Toxic Elements in a Semi-Arid Region in Mexico
Authors: Sanchez-Lopez, Ariadna S.
Gonzalez-Chavez, Ma. Del Carmen A.
Carrillo-Gonzalez, Rogelio
Diaz-Garduno, Margarita
Issue Date: 2015
Abstract: The aim of this research was to identify wild plant species applicable for remediation of mine tailings in arid soils. Plants growing on two mine tailings were identified and evaluated for their potential use in phytoremediation based on the concentration of potentially toxic elements (PTEs) in roots and shoots, bioconcentration (BCF) and translocation factors (TF). Total, water-soluble and DTPA-extractable concentrations of Pb, Cd, Zn, Cu, Co and Ni in rhizospheric and bulk soil were determined. Twelve species can grow on mine tailings, accumulate PTEs concentrations above the commonly accepted phytotoxicity levels, and are suitable for establishing a vegetation cover on barren mine tailings in the Zimapan region. Pteridium sp. is suitable for Zn and Cd phytostabilization. Aster gymnocephalus is a potential phytoextractor for Zn, Cd, Pb and Cu; Gnaphalium sp. for Cu and Crotalaria pumila for Zn. The species play different roles according to the specific conditions where they are growing at one site behaving as a PTEs accumulator and at another as a stabilizer. For this reason and due to the lack of a unified approach for calculation and interpretation of bioaccumulation factors, only considering BCF and TF may be not practical in all cases.
Notes: [Sanchez-Lopez, Ariadna S.; Gonzalez-Chavez, Ma. Del Carmen A.; Carrillo-Gonzalez, Rogelio] Colegio Postgrad, Edafol Soil & Environm Chem Lab, Texcoco 56230, Estado De Mexic, Mexico. [Sanchez-Lopez, Ariadna S.; Gonzalez-Chavez, Ma. Del Carmen A.; Carrillo-Gonzalez, Rogelio] Colegio Postgrad, Environm Microbiol Lab, Texcoco 56230, Estado De Mexic, Mexico. [Vangronsveld, Jaco] Hasselt Univ, Ctr Environm Sci, Diepenbeek, Belgium. [Diaz-Garduno, Margarita] Univ Autonoma Chapingo, Texcoco 56230, Estado De Mexic, Mexico.
URI: http://hdl.handle.net/1942/18130
DOI: 10.1080/15226514.2014.922922
ISI #: 000346267000009
ISSN: 1522-6514
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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