2021
DOI: 10.1016/j.scitotenv.2020.143697
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Immediate and long-term impacts of one of the worst mining tailing dam failure worldwide (Bento Rodrigues, Minas Gerais, Brazil)

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Cited by 37 publications
(12 citation statements)
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“…Laboratory toxicity testing of the bulk sediments and/or tailings-like layer also resulted in no acute or chronic toxicity to C. sancticaroli, corroborating that metals are likely not bioavailable, six years after the dam rupture. Our results may indicate improving conditions in the Rio Doce, because six months after the rupture, Vergilio et al (2021) observed water and sediment toxicity in tests with microalgae (R. subcapitata), D. similis, and Allium cepa; the authors did not observe toxicity to adults of Danio rerio. In another study, using elutriates from sediments collected in 2019, Yamamoto, Souza, et al (2022) detected adverse effects in embryos of Rhamdia quelen, which were associated with metals and organic compounds.…”
Section: Discussionmentioning
confidence: 52%
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“…Laboratory toxicity testing of the bulk sediments and/or tailings-like layer also resulted in no acute or chronic toxicity to C. sancticaroli, corroborating that metals are likely not bioavailable, six years after the dam rupture. Our results may indicate improving conditions in the Rio Doce, because six months after the rupture, Vergilio et al (2021) observed water and sediment toxicity in tests with microalgae (R. subcapitata), D. similis, and Allium cepa; the authors did not observe toxicity to adults of Danio rerio. In another study, using elutriates from sediments collected in 2019, Yamamoto, Souza, et al (2022) detected adverse effects in embryos of Rhamdia quelen, which were associated with metals and organic compounds.…”
Section: Discussionmentioning
confidence: 52%
“…The concentrations of most metals in the sediments were lower than those reported just after the dam rupture (Hatje et al, 2017; IGAM, 2020; Vergilio et al, 2021) and comparable or slightly higher than those reported before the disaster, when the Rio Doce basin was already considered chronically affected (Duarte et al, 2021; Rodrigues et al, 2014; Santolin et al, 2015). Although the concentrations measured exceeded the national SQGs for Levels 1 (threshold) and 2 (probable toxicity), the evaluation of chemical concentrations in bulk sediment samples displayed no enrichment or elevated geochemical index levels.…”
Section: Discussionmentioning
confidence: 65%
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“…The causes of such an increase are not totally known, but they may include climatic factors inducing metal remobilization, deposition of atmospheric contaminants, and other sources of contamination. Vergilio et al (2021) stated that a factor contributing to the increase of metal concentrations in sediments from the lower DRB could be the reduction of the amount of reactive iron oxides in suspended particulate matter, as their deposition would favor metal retention in the sediments.…”
Section: Discussionmentioning
confidence: 99%
“…comprometimento da fauna e flora; contaminação do solo e corpos hídricos por metais pesados; poluição do ar; compactação do solo pelo tráfego de máquinas pesadas; redução da infiltração da água e aumento do escoamento superficial; rebaixamento do nível freático para formação das cavas; além da geração de uma grande quantidade de rejeitos, principalmente, armazenados em barragens, e em caso do rompimento dessas estruturas os danos ambientais são ainda mais relevantes (FELIPPE et al, 2016;MOROZESK et al, 2021;NASCIMENTO et al, 2021;VERGILIO et al, 2021…”
Section: Resultsunclassified