Far-reaching cytogenotoxic effects of mine waste from the Fundão dam disaster in Brazil

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorQuadra, Gabrielle R.-
Autor(es): dc.creatorRoland, Fábio-
Autor(es): dc.creatorBarros, Nathan-
Autor(es): dc.creatorMalm, Olaf-
Autor(es): dc.creatorLino, Adan S.-
Autor(es): dc.creatorAzevedo, Guilherme M.-
Autor(es): dc.creatorThomaz, José R.-
Autor(es): dc.creatorAndrade-Vieira, Larissa F.-
Autor(es): dc.creatorPraça-Fontes, Milene M.-
Autor(es): dc.creatorAlmeida, Rafael M.-
Autor(es): dc.creatorMendonça, Raquel F.-
Autor(es): dc.creatorCardoso, Simone J.-
Autor(es): dc.creatorGuida, Yago S.-
Autor(es): dc.creatorCampos, José Marcello. S.-
Data de aceite: dc.date.accessioned2026-02-09T11:56:00Z-
Data de disponibilização: dc.date.available2026-02-09T11:56:00Z-
Data de envio: dc.date.issued2019-03-23-
Data de envio: dc.date.issued2019-03-23-
Data de envio: dc.date.issued2019-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/33278-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0045653518319659-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1150655-
Descrição: dc.descriptionOn November 2015, one of Brazil's most important watersheds was impacted by the mine waste from Fundão dam collapse in Mariana. The mine waste traveled over 600 km along the Doce River before reaching the sea, causing severe devastation along its way. Here we assessed trace element concentrations and cytogenotoxic effects of the released mine waste. Water samples were collected along the Doce River ten days after the disaster in two impacted sites and one non-impacted site. Sampling points were located hundreds of kilometers downstream of the collapsed dam. Water samples were used for trace element quantification and to run an experiment using Allium cepa to test cytogenotoxicity. We found extremely high concentrations of particulate Fe, Al, and Mn in the impacted sites. We observed cytogenotoxic effects such as alterations in mitotic and phase indexes, and enhanced frequency of chromosomal aberrations. Our results indicate interferences in the cell cycle in impacted sites located hundreds of kilometers downstream of the disaster. The environmental impacts of the dam collapse may not only be far-reaching but also very likely long-lasting, because the mine waste may persist in the Doce River sediment for decades.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceChemosphere-
Palavras-chave: dc.subjectAllium cepa-
Palavras-chave: dc.subjectCytogenotoxicity-
Palavras-chave: dc.subjectDam collapse-
Palavras-chave: dc.subjectDoce River, Watershed (Brazil)‏-
Palavras-chave: dc.subjectMariana (Minas Gerais, Brazil)-
Palavras-chave: dc.subjectTrace elements-
Título: dc.titleFar-reaching cytogenotoxic effects of mine waste from the Fundão dam disaster in Brazil-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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