E3S Web Conf.
Volume 98, 201916th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference)
|Number of page(s)||5|
|Section||Water-Rock Interaction Controlling Water Quality and Human Health Issues|
|Published online||07 June 2019|
Partitioning of potentially toxic elements among two colloidal fractions and relevance for their mobility in different water types
ICT, Institute of Earth Sciences, Pole of the University of Minho, Earth Sciences Department, Campus de Gualtar, 4710 Braga, Portugal
2 ICT, Institute of Earth Sciences, Pole of the University of Évora, Department of Geosciences, School of Sciences and Technology, University of Évora, 94, Évora, Portugal
3 Departamento de Geologia, UTAD, Vila Real; GeoBioTec, Universidade de Aveiro, Portugal
* Corresponding author: email@example.com
Potentially toxic elements are mobilized in aquatic systems in solution or bounded to colloids of different sizes, which may include nanometer particles. The present work studies the distribution of elements (Al, Fe, Zn, Mn, Co, Cd, Ni, Cu, and As) between small (<0.20 μm) and larger (0.45–0.20 μm) colloids in different waters sources in a world class metallogenic province (Iberian Pyrite Belt), including the acid mine waters. Syringe filters with pore-size ratings of 0.20 μm and 0.45 μm have been used to assess the transport and fate of these potentially toxic elements. The results show the contribution of colloids for mobility of arsenic and most metals, evidencing the role of the small ones in acid mine drainage.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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