Heavy metals and arsenic accumulation in the maritime pine-tree (Pinus pinaster L. Alton) of Vale das Gatas mine tailings and surroundings (Northern Portugal)
The vegetable material of Pinus pinaster L. Aiton was collected in three sampling zones, outside the mines influence area;in a sampling zone in the area where it was previously detected contamination by dispersion from the railings;as well as in exemplars from the tailings. Besides the gathering of vegetable material, we also proceeded to the sampling of the soils that composed the substrate. The vegetable material sampling fell upon the aerial parts (branches). At the time of the vegetable material sampling, we proceeded to the separation of the different organs (stems and leaves) and also to the separation of tissues with different maturity, collecting materials with 1, 2, 3 and 4 years of age. The variations of the contents in vegetable materials are in general strongly related to the variation of the contents in soils. It is also verified that it is in the zones of anomaly that the contents in the plant approximate the contents found in the soils. The results show that the several contents of the elements depend as much on the plants organ as on its age, as well as on the sampling site. For some elements, it is verified that the relations between the concentrations in the stems and in the leaves and those of the substrate soil demonstrate a good ability of indicating contaminations.
Bioaccumulation Contaminated soils Heavy metals and arsenic Mine tailings Pinus pinaster L. Aiton
P. J. C. Favas J. A. M. S. Pratas
Department of Geology, University of Tras-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila Real, Department of Earth Sciences, University of Coimbra, Largo Marques de Pombal, 3001-401 Coimbra, Port
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
828-829
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）