Titre:	Exploring a new approach for assessing the fate and behavior of the tailings released by the Brumadinho dam collapse (Minas Gerais, Brazil)
Auteur(s):	Kobayashi, Hikari Garnier, Jeremie Mulholland, Daniel Santos Quantin, Cecile Haurine, Frédéric Tonha, Myller Joko, Caio Olivetti, Diogo Freydier, Remi Seyler, Patrick Martinez, Jean-Michel Roig, Henrique Llacer
metadata.dc.contributor.affiliation:	University of Brasilia, Geoscience Institute UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change" University of Brasilia, Geoscience Institute Universidade Federal de Tocantins, Laboratório de Análises Ambientais - Química Ambiental GEOPS, Université, Paris Saclay – CNRS GEOPS, Université, Paris Saclay – CNRS University of Brasilia, Geoscience Institute UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change" Brazilian Federal PolicNational Institute of Criminalistics University of Brasilia, Geoscience Institute Université de Montpellier UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change" Université de Montpellier Toulouse University, G´eoscience Environnement Toulouse University of Brasilia, Geoscience Institute UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change"
Assunto::	Desastres Barragens de terra Contaminação por metais Rejeitos de mineração Geoquímica ambiental Isótopos
Date de publication:	jan-2023
Editeur:	Elsevier B.V.
Référence bibliographique:	KOBAYASHI, Hikari et al. Exploring a new approach for assessing the fate and behavior of the tailings released by the Brumadinho dam collapse (Minas Gerais, Brazil). Journal of Hazardous Materials, [S.l.], v. 448, 130828, 15 abr. 2023. DOI: https://doi.org/10.1016/j.jhazmat.2023.130828.
Abstract:	In 2019, the Brumadinho dam rupture released a massive amount of iron ore mining tailings into the Paraopeba River. Up to now, it remains a public health issue for the local and downstream populations. The present study aims to assess the behavior and fate of metal contamination following the disaster. Using new sampling strategies and up-to-date geochemistry tools, we show that the dissolved metal concentrations (< 0.22 μm cutoff filtration) remained low in the Paraopeba River. Although the tailings present high metal concentrations (Fe, Mn, Cd, and As), the high local background contents of metals and other previous anthropogenic contamination hamper tracing the sediment source based only on the geochemical signature. The Pb isotopic composition coupled with the metals enrichment factor of sediments and Suspended Particulate Matter (SPM) constitutes accurate proxies that trace the fate and dispersion of tailing particles downstream of the dam collapse. This approach shows that 1) The influence of the released tailing was restricted to the Paraopeba River and the Retiro Baixo reservoir, located upstream of the S˜ao Francisco River; 2) The tailings’ contribution to particulate load ranged from 17 % to 88 % in the Paraopeba River; 3) Other regional anthropogenic activities also contribute to water and sediment contamination of the Paraopeba river.
metadata.dc.description.unidade:	Instituto de Geociências (IG)
DOI:	https://doi.org/10.1016/j.jhazmat.2023.130828
Collection(s) :	Artigos publicados em periódicos e afins

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