Explaining the persistence of hazardous chemicals in the Doce River (Brazil) by multiple sources of contamination and a major environmental disaster

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Ceará-
Autor(es): dc.contributorFederal University of Paraná-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorYamamoto, F. Y.-
Autor(es): dc.creatorPauly, G. F.E.-
Autor(es): dc.creatorNascimento, L. S.-
Autor(es): dc.creatorFernandes, G. M.-
Autor(es): dc.creatorSantos, M. P.-
Autor(es): dc.creatorFigueira, R. C.L.-
Autor(es): dc.creatorCavalcante, R. M.-
Autor(es): dc.creatorGrassi, M. T.-
Autor(es): dc.creatorAbessa, D. M.S.-
Data de aceite: dc.date.accessioned2025-08-21T21:37:48Z-
Data de disponibilização: dc.date.available2025-08-21T21:37:48Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.hazadv.2023.100250-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305838-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305838-
Descrição: dc.descriptionHigh concentrations of hazardous chemicals may be introduced into aquatic ecosystems during episodes of acute and chronic environmental contamination. This study aimed to quantify inorganic and organic contaminants along the Doce River Basin (DRB), evaluate spatial and temporal variations of their concentrations, and their associations with the respective potential anthropogenic sources, considering the cumulative effects of a tailing dam rupture event. Multivariate analysis indicated that higher levels of trace elements in the Upper DRB were related to its proximity to the mining activities in this region, while organic contaminants such as PAHs are probably introduced by industrial effluents and urban centers along the DRB. In addition, seasonal variation showed to be an important factor influencing the distribution of chemicals, with wet season increasing levels of trace elements in the water. Despite the contribution of natural geological features in the Upper DRB, it becomes clearer that intense mineral exploitation for decades, combined with the dam failure disaster are responsible for the increased levels and spread of these inorganic contaminants along the DRB. Furthermore, other sources of organic contaminants contribute to this contamination scenario, resulting in complex mixtures of chemicals and increasing the ecological risks in the region.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionInstitute of Biosciences São Paulo State University-
Descrição: dc.descriptionMarine Science Institute Federal University of Ceará-
Descrição: dc.descriptionChemistry Department Federal University of Paraná-
Descrição: dc.descriptionOceanographic Institute University of São Paulo-
Descrição: dc.descriptionInstitute of Biosciences São Paulo State University-
Descrição: dc.descriptionCNPq: #308533/2018-6-
Descrição: dc.descriptionCNPq: #311609/2014-7-
Idioma: dc.languageen-
Relação: dc.relationJournal of Hazardous Materials Advances-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectComplex mixtures-
Palavras-chave: dc.subjectGeochemistry-
Palavras-chave: dc.subjectMultivariate analysis-
Palavras-chave: dc.subjectOrganic chemicals-
Palavras-chave: dc.subjectTrace elements-
Título: dc.titleExplaining the persistence of hazardous chemicals in the Doce River (Brazil) by multiple sources of contamination and a major environmental disaster-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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