Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.

The Upper Velhas River Basin, in the mining region of the Iron Quadrangle, is one of the most polluted basins in Minas Gerais, Brazil. The region has been exploited for gold and iron, among other substances of interest. In addition to abandoned mines, active works and mineralized rocks contribute to...

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Detalles Bibliográficos
Autores: Costa, Raphael de Vicq Ferreira da, Leite, Mariangela Garcia Praça, Leão, Lucas Pereira, Nalini Júnior, Hermínio Arias, Valente, Teresa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:Brasil
Institución:Universidade Federal de Ouro Preto (UFOP)
Repositorio:Repositório Institucional da UFOP
Idioma:inglés
OAI Identifier:oai:repositorio.ufop.br:123456789/18575
Acceso en línea:https://www.repositorio.ufop.br/handle/123456789/18575
https://doi.org/10.3390/min13121545
Access Level:acceso abierto
Palabra clave:High-density geochemical mapping
Reference values
Mining contamination
Brazil
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spelling Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.High-density geochemical mappingReference valuesMining contaminationBrazilThe Upper Velhas River Basin, in the mining region of the Iron Quadrangle, is one of the most polluted basins in Minas Gerais, Brazil. The region has been exploited for gold and iron, among other substances of interest. In addition to abandoned mines, active works and mineralized rocks contribute to the discharge of contaminated waters into the rivers and streams. Thus, high- density geochemical mapping with the determination of reference values has become very important, as it allows the spatial distribution of contaminant elements to be obtained, contributing to the recognition of areas with deviant values in the basin. Two hundred and eight sediment samples were collected from streams throughout the Velhas River Basin, with a density of one sample per 15 km2. Geochemical maps were compiled using the distance-weighted inverse interpolation method, and concentrations were distinguished from anomalies using the box plot Upper Inner Fence technique. It was found that 73–78% of the basin area does not present geogenic and anthropic anomalies, with values up to the third quartile for As, Cd, Cr, Ni, Cu, Pb, and Zn. However, anomalies related to human actions, mainly mining works and rock types, occupy 2 to 11% of the area. This first high-density mapping in the Upper Velhas River Basin found numerous streams with concentrations of the elements studied above the Probable Effect Level, allowing us to determine which locations, cities, and river sub-basins are exposed to environmental risks and should be monitored and protected.2024-09-11T19:33:13Z2024-09-11T19:33:13Z2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCOSTA, R. de V. F. de. et al. Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region: upper velhas river basin stream sediments, Iron Quadrangle, Brazil. Minerals, v. 13, artigo 1545, 2023. Disponível em: <https://www.mdpi.com/2075-163X/13/12/1545>. Acesso em: 15 ago. 2024.2075-163Xhttps://www.repositorio.ufop.br/handle/123456789/18575https://doi.org/10.3390/min13121545ark:/61566/0013000000934This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigoinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPCosta, Raphael de Vicq Ferreira daLeite, Mariangela Garcia PraçaLeão, Lucas PereiraNalini Júnior, Hermínio AriasValente, Teresa2024-11-10T13:59:22Zoai:repositorio.ufop.br:123456789/18575Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332024-11-10T13:59:22Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
title Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
spellingShingle Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
Costa, Raphael de Vicq Ferreira da
High-density geochemical mapping
Reference values
Mining contamination
Brazil
title_short Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
title_full Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
title_fullStr Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
title_full_unstemmed Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
title_sort Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region : upper velhas river basin stream sediments, Iron Quadrangle, Brazil.
dc.creator.none.fl_str_mv Costa, Raphael de Vicq Ferreira da
Leite, Mariangela Garcia Praça
Leão, Lucas Pereira
Nalini Júnior, Hermínio Arias
Valente, Teresa
author Costa, Raphael de Vicq Ferreira da
author_facet Costa, Raphael de Vicq Ferreira da
Leite, Mariangela Garcia Praça
Leão, Lucas Pereira
Nalini Júnior, Hermínio Arias
Valente, Teresa
author_role author
author2 Leite, Mariangela Garcia Praça
Leão, Lucas Pereira
Nalini Júnior, Hermínio Arias
Valente, Teresa
author2_role author
author
author
author
dc.subject.por.fl_str_mv High-density geochemical mapping
Reference values
Mining contamination
Brazil
topic High-density geochemical mapping
Reference values
Mining contamination
Brazil
description The Upper Velhas River Basin, in the mining region of the Iron Quadrangle, is one of the most polluted basins in Minas Gerais, Brazil. The region has been exploited for gold and iron, among other substances of interest. In addition to abandoned mines, active works and mineralized rocks contribute to the discharge of contaminated waters into the rivers and streams. Thus, high- density geochemical mapping with the determination of reference values has become very important, as it allows the spatial distribution of contaminant elements to be obtained, contributing to the recognition of areas with deviant values in the basin. Two hundred and eight sediment samples were collected from streams throughout the Velhas River Basin, with a density of one sample per 15 km2. Geochemical maps were compiled using the distance-weighted inverse interpolation method, and concentrations were distinguished from anomalies using the box plot Upper Inner Fence technique. It was found that 73–78% of the basin area does not present geogenic and anthropic anomalies, with values up to the third quartile for As, Cd, Cr, Ni, Cu, Pb, and Zn. However, anomalies related to human actions, mainly mining works and rock types, occupy 2 to 11% of the area. This first high-density mapping in the Upper Velhas River Basin found numerous streams with concentrations of the elements studied above the Probable Effect Level, allowing us to determine which locations, cities, and river sub-basins are exposed to environmental risks and should be monitored and protected.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024-09-11T19:33:13Z
2024-09-11T19:33:13Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv COSTA, R. de V. F. de. et al. Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region: upper velhas river basin stream sediments, Iron Quadrangle, Brazil. Minerals, v. 13, artigo 1545, 2023. Disponível em: <https://www.mdpi.com/2075-163X/13/12/1545>. Acesso em: 15 ago. 2024.
2075-163X
https://www.repositorio.ufop.br/handle/123456789/18575
https://doi.org/10.3390/min13121545
dc.identifier.dark.fl_str_mv ark:/61566/0013000000934
identifier_str_mv COSTA, R. de V. F. de. et al. Geochemical mapping and reference values of potentially toxic elements in a contaminated mining region: upper velhas river basin stream sediments, Iron Quadrangle, Brazil. Minerals, v. 13, artigo 1545, 2023. Disponível em: <https://www.mdpi.com/2075-163X/13/12/1545>. Acesso em: 15 ago. 2024.
2075-163X
ark:/61566/0013000000934
url https://www.repositorio.ufop.br/handle/123456789/18575
https://doi.org/10.3390/min13121545
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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score 15,198674

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