Phytobarriers: Plants capture particles containing potentially toxic elements originating from mine tailings in semiarid regions
| Autor: | Greta Rosas-Saito, Rogelio Carrillo-González, Ariadna S. Sánchez-López, Jaco Vangronsveld, Ma. del Carmen A. González-Chávez |
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| Rok vydání: | 2014 |
| Předmět: |
Health
Toxicology and Mutagenesis Toxicology Dispersion (geology) Mining Mining engineering Metals Heavy Soil Pollutants Mexico Mycelium Chemistry fungi Fungi food and beverages General Medicine Plants Pollution Tailings Trichome Phytoremediation Physical Barrier Environmental chemistry Shoot Microscopy Electron Scanning Particle Composition (visual arts) Plant Shoots Environmental Monitoring |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 205 |
| ISSN: | 1873-6424 |
| Popis: | Retention of particles containing potentially toxic elements (PTEs) on plants that spontaneously colonize mine tailings was studied through comparison of washed and unwashed shoot samples. Zn, Pb, Cd, Cu, Ni, Co and Mn concentrations were determined in plant samples. Particles retained on leaves were examined by Scanning Electronic Microscopy and energy dispersive X-Ray analysis. Particles containing PTEs were detected on both washed and unwashed leaves. This indicates that the thorough washing procedure did not remove all the particles containing PTEs from the leaf surface, leading to an overestimation of the concentrations of PTEs in plant tissues. Particularly trichomes and fungal mycelium were retaining particles. The quantity and composition of particles varied among plant species and place of collection. It is obvious that plants growing on toxic mine tailings form a physical barrier against particle dispersion and hence limit the spread of PTEs by wind. |
| Databáze: | OpenAIRE |
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