Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1002/ieam.4785 http://hdl.handle.net/11449/247556 |
Resumo: | The Fundão mine tailings dam rupture of 2015, in the Rio Doce basin, Brazil, resulted in the deposition of tailings downstream of the dam. It has yet to be determined if metals associated with the tailings have contributed toxicity to organisms, burying a time bomb that could be ticking. Currently the data on toxicity to benthic and aquatic organisms have not been assessed sufficiently to allow an informed assessment using an approach based on weight-of-evidence. This study was conducted to ascertain if sediments at “hot spots” that received Fundão tailings reflected elevated concentrations of metals and if these concentrations were sufficient to result in toxicity to freshwater organisms. The lines-of-evidence considered included assessing metals concentrations in relation to sediment quality criteria, establishing biogeochemical characterizations, completing an evaluation of potential metal release upon resuspension to provide information on bioavailability, and identifying acute and chronic toxicity effects using sensitive native species for waters (water flea, Daphnia similis) and sediments (burrowing midge larvae, Chironomus sancticaroli). Only porewater concentrations of iron and manganese exceeded Brazilian surface water criteria, whereas most trace elements exhibited no enrichment or elevated environmental indexes. The concentrations of bioavailable metals were assessed to be low, and metal concentrations did not increase in the overlying water upon resuspension; rather, they decreased through time. Toxicity testing in resuspended waters and bulk sediments resulted in no acute or chronic toxicity to either benthic or aquatic species. The low metal bioavailability and absence of toxicity of the tailings-enriched sediments was attributed to the strong binding and rapid removal of potentially toxic metal ions caused by oxyhydroxides and particles in the presence of iron-rich particulates. The findings of these sediment hot-spot studies indicate the Fundão dam release of tailings more than six years ago is not causing the current release of toxic concentrations of metals into the freshwaters of the Rio Doce. Integr Environ Assess Manag 2023;00:1–11. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC). |
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Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment qualityBioavailabilityChemistryEnvironmental risk assessmentMiningTailings Dam failureThe Fundão mine tailings dam rupture of 2015, in the Rio Doce basin, Brazil, resulted in the deposition of tailings downstream of the dam. It has yet to be determined if metals associated with the tailings have contributed toxicity to organisms, burying a time bomb that could be ticking. Currently the data on toxicity to benthic and aquatic organisms have not been assessed sufficiently to allow an informed assessment using an approach based on weight-of-evidence. This study was conducted to ascertain if sediments at “hot spots” that received Fundão tailings reflected elevated concentrations of metals and if these concentrations were sufficient to result in toxicity to freshwater organisms. The lines-of-evidence considered included assessing metals concentrations in relation to sediment quality criteria, establishing biogeochemical characterizations, completing an evaluation of potential metal release upon resuspension to provide information on bioavailability, and identifying acute and chronic toxicity effects using sensitive native species for waters (water flea, Daphnia similis) and sediments (burrowing midge larvae, Chironomus sancticaroli). Only porewater concentrations of iron and manganese exceeded Brazilian surface water criteria, whereas most trace elements exhibited no enrichment or elevated environmental indexes. The concentrations of bioavailable metals were assessed to be low, and metal concentrations did not increase in the overlying water upon resuspension; rather, they decreased through time. Toxicity testing in resuspended waters and bulk sediments resulted in no acute or chronic toxicity to either benthic or aquatic species. The low metal bioavailability and absence of toxicity of the tailings-enriched sediments was attributed to the strong binding and rapid removal of potentially toxic metal ions caused by oxyhydroxides and particles in the presence of iron-rich particulates. The findings of these sediment hot-spot studies indicate the Fundão dam release of tailings more than six years ago is not causing the current release of toxic concentrations of metals into the freshwaters of the Rio Doce. Integr Environ Assess Manag 2023;00:1–11. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).São Paulo State University—UNESP Praça Infante Dom Henrique, São PauloSchool for Environment and Sustainability University of MichiganWSP GolderCSIRO EnvironmentEnvironmental and Molecular Toxicology Department Oregon State UniversityHydrobiology, Espírito SantoSão Paulo State University—UNESP Praça Infante Dom Henrique, São PauloUniversidade Estadual Paulista (UNESP)University of MichiganWSP GolderCSIRO EnvironmentOregon State UniversityHydrobiologyAbessa, Denis [UNESP]Burton, G. AllenCervi, Eduardo C.Simpson, Stuart L.Stubblefield, WilliamRibeiro, Caio C. [UNESP]Cruz, Ana C. F. [UNESP]Kruger, GiseleSmith, Ross2023-07-29T13:19:18Z2023-07-29T13:19:18Z2023-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1002/ieam.4785Integrated Environmental Assessment and Management.1551-3793http://hdl.handle.net/11449/24755610.1002/ieam.47852-s2.0-85161481744Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIntegrated Environmental Assessment and Managementinfo:eu-repo/semantics/openAccess2023-07-29T13:19:18Zoai:repositorio.unesp.br:11449/247556Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:09:07.079515Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
title |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
spellingShingle |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality Abessa, Denis [UNESP] Bioavailability Chemistry Environmental risk assessment Mining Tailings Dam failure |
title_short |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
title_full |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
title_fullStr |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
title_full_unstemmed |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
title_sort |
Has the Rio Doce “time bomb” been defused? Using a weight-of-evidence approach to determine sediment quality |
author |
Abessa, Denis [UNESP] |
author_facet |
Abessa, Denis [UNESP] Burton, G. Allen Cervi, Eduardo C. Simpson, Stuart L. Stubblefield, William Ribeiro, Caio C. [UNESP] Cruz, Ana C. F. [UNESP] Kruger, Gisele Smith, Ross |
author_role |
author |
author2 |
Burton, G. Allen Cervi, Eduardo C. Simpson, Stuart L. Stubblefield, William Ribeiro, Caio C. [UNESP] Cruz, Ana C. F. [UNESP] Kruger, Gisele Smith, Ross |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) University of Michigan WSP Golder CSIRO Environment Oregon State University Hydrobiology |
dc.contributor.author.fl_str_mv |
Abessa, Denis [UNESP] Burton, G. Allen Cervi, Eduardo C. Simpson, Stuart L. Stubblefield, William Ribeiro, Caio C. [UNESP] Cruz, Ana C. F. [UNESP] Kruger, Gisele Smith, Ross |
dc.subject.por.fl_str_mv |
Bioavailability Chemistry Environmental risk assessment Mining Tailings Dam failure |
topic |
Bioavailability Chemistry Environmental risk assessment Mining Tailings Dam failure |
description |
The Fundão mine tailings dam rupture of 2015, in the Rio Doce basin, Brazil, resulted in the deposition of tailings downstream of the dam. It has yet to be determined if metals associated with the tailings have contributed toxicity to organisms, burying a time bomb that could be ticking. Currently the data on toxicity to benthic and aquatic organisms have not been assessed sufficiently to allow an informed assessment using an approach based on weight-of-evidence. This study was conducted to ascertain if sediments at “hot spots” that received Fundão tailings reflected elevated concentrations of metals and if these concentrations were sufficient to result in toxicity to freshwater organisms. The lines-of-evidence considered included assessing metals concentrations in relation to sediment quality criteria, establishing biogeochemical characterizations, completing an evaluation of potential metal release upon resuspension to provide information on bioavailability, and identifying acute and chronic toxicity effects using sensitive native species for waters (water flea, Daphnia similis) and sediments (burrowing midge larvae, Chironomus sancticaroli). Only porewater concentrations of iron and manganese exceeded Brazilian surface water criteria, whereas most trace elements exhibited no enrichment or elevated environmental indexes. The concentrations of bioavailable metals were assessed to be low, and metal concentrations did not increase in the overlying water upon resuspension; rather, they decreased through time. Toxicity testing in resuspended waters and bulk sediments resulted in no acute or chronic toxicity to either benthic or aquatic species. The low metal bioavailability and absence of toxicity of the tailings-enriched sediments was attributed to the strong binding and rapid removal of potentially toxic metal ions caused by oxyhydroxides and particles in the presence of iron-rich particulates. The findings of these sediment hot-spot studies indicate the Fundão dam release of tailings more than six years ago is not causing the current release of toxic concentrations of metals into the freshwaters of the Rio Doce. Integr Environ Assess Manag 2023;00:1–11. © 2023 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC). |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T13:19:18Z 2023-07-29T13:19:18Z 2023-01-01 |
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 |
http://dx.doi.org/10.1002/ieam.4785 Integrated Environmental Assessment and Management. 1551-3793 http://hdl.handle.net/11449/247556 10.1002/ieam.4785 2-s2.0-85161481744 |
url |
http://dx.doi.org/10.1002/ieam.4785 http://hdl.handle.net/11449/247556 |
identifier_str_mv |
Integrated Environmental Assessment and Management. 1551-3793 10.1002/ieam.4785 2-s2.0-85161481744 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Integrated Environmental Assessment and Management |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128468219592704 |