E3S Web of Conferences
Volume 1, 2013Proceedings of the 16th International Conference on Heavy Metals in the Environment
|Number of page(s)||4|
|Section||Heavy Metals in Contaminated Sites II: Mining and Smelting|
|Published online||23 April 2013|
Heavy metals biogeochemistry in abandoned mining areas
1 Department of Geology, University of Trás-os-Montes e Alto Douro, Vila Real, PORTUGAL
2 Department of Earth Sciences, University of Coimbra, Coimbra, PORTUGAL
3 IMAR-CMA Marine and Environmental Research Centre, University of Coimbra, Coimbra, PORTUGAL
Plants growing on the abandoned Portuguese mines, highly contaminated with W, Sn, As, Cd, Cu, Zn and Pb, have been studied for their biogeochemical indication/prospecting and mine restoration potential. The results of analysis show that the species best suited for biogeochemical indicating are: aerial tissues of Halimium umbellatum (L.) Spach, for As and W; leaves of Erica arborea L. for Bi, Sn, W and mostly Pb; stems of Erica arborea L. for Pb; needles of Pinus pinaster Aiton and aerial tissues of Pteridium aquilinum (L.) Kuhn for W; and leaves of Quercus faginea Lam. for Sn. The aquatic plant studied (Ranunculus peltatus Schrank) can be used to decrease the heavy metals, and arsenic amounts into the aquatic environment affected by acid mine drainages.
Key words: Acid mine drainage / bioaccumulation / bioindicating / mine restoration / native plants / soils
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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