Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da Universidade Federal Fluminense (RIUFF) |
Texto Completo: | http://app.uff.br/riuff/handle/1/29347 |
Resumo: | The accumulation of metals can reach degrees capable of representing a coastal environment's risk. However, the bioaccumulation of trace metals through the trophic chain represents also a risk real for human health. The coastal sediments are considered the main receptor and reservoir of pollutants, mostly trace metals. Eventually, these metals reach the coastal region by fluvial transport, commonly associated with organic matter the particles flocculate and settle. In the coastal sea bottom, the trace metals frequently face reducible conditions in sediments capable to decrease mobility, resulting in biounavailable and stabilized chemical species. However, the polluted sediment resuspension by natural or anthropogenic events could result in potential redox and pH changes, influencing directly on the trace metals mobility. Therefore, the trace metals characteristic in different geochemical fractions assessment associated with the sediment physicochemical conditions is crucial to the full comprehension of these pollutants in the coastal environment. For the trace metals assessment in surface sediments of Sepetiba Bay were collected 18 samples. The geochemical fractionation assessment was performed through the BCR-701 sequential extraction, for the determination of pollution extension were applied the Geoaccumulation Index (Igeo), and the Enrichment Factor, and for assessment of pollution risks for the biota were applied the Risk Assessment Code (RAC) and the Risky Pollution Index. A resuspension experiment was used to quantify the amount of metals (Cd, Ni, Cr, Fe, Al, Pb, and Zn), the concentration of the metals were determined in the sediment by ICP-OES and in the water by ICP-MS. A model to predict the concentration of trace metals in the water column after a resuspension event was developed through the geochemical fraction assessment associated with the resuspension experiment results. The Cd and Zn presented approximately 50% of the total in concentration in the exchangeable phase, with relevant enrichment and risk to the biota. The resuspension experiment demonstrated the effectiveness of the potential redox manipulation to metals release, especially for Cd, Pb, and Zn. During the process of changing the reducible to oxidant condition was possible to observe the metals release to solution and reassemble into the different geochemical compartments. The geochemical model for trace metals prediction in the water column presented a relevant tool for planning and/management of activities involving polluted sediments. |
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Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sedimentsTrace metalsBioavailabilitySepetiba BayMetal traçoSedimentoAnálise de sedimentosBaía de Sepetiba (RJ)Poluente ambientalDragagemAmbiente costeiroMetais traçoBiodisponibilidadeBaía de SepetibaAmbiente costeiroThe accumulation of metals can reach degrees capable of representing a coastal environment's risk. However, the bioaccumulation of trace metals through the trophic chain represents also a risk real for human health. The coastal sediments are considered the main receptor and reservoir of pollutants, mostly trace metals. Eventually, these metals reach the coastal region by fluvial transport, commonly associated with organic matter the particles flocculate and settle. In the coastal sea bottom, the trace metals frequently face reducible conditions in sediments capable to decrease mobility, resulting in biounavailable and stabilized chemical species. However, the polluted sediment resuspension by natural or anthropogenic events could result in potential redox and pH changes, influencing directly on the trace metals mobility. Therefore, the trace metals characteristic in different geochemical fractions assessment associated with the sediment physicochemical conditions is crucial to the full comprehension of these pollutants in the coastal environment. For the trace metals assessment in surface sediments of Sepetiba Bay were collected 18 samples. The geochemical fractionation assessment was performed through the BCR-701 sequential extraction, for the determination of pollution extension were applied the Geoaccumulation Index (Igeo), and the Enrichment Factor, and for assessment of pollution risks for the biota were applied the Risk Assessment Code (RAC) and the Risky Pollution Index. A resuspension experiment was used to quantify the amount of metals (Cd, Ni, Cr, Fe, Al, Pb, and Zn), the concentration of the metals were determined in the sediment by ICP-OES and in the water by ICP-MS. A model to predict the concentration of trace metals in the water column after a resuspension event was developed through the geochemical fraction assessment associated with the resuspension experiment results. The Cd and Zn presented approximately 50% of the total in concentration in the exchangeable phase, with relevant enrichment and risk to the biota. The resuspension experiment demonstrated the effectiveness of the potential redox manipulation to metals release, especially for Cd, Pb, and Zn. During the process of changing the reducible to oxidant condition was possible to observe the metals release to solution and reassemble into the different geochemical compartments. The geochemical model for trace metals prediction in the water column presented a relevant tool for planning and/management of activities involving polluted sediments.Conselho Nacional de Desenvolvimento Científico e TecnológicoA acumulação de metais pode alcançar níveis capazes de representar um risco ao ecossistema costeiro. No entanto, a bioacumulação de metais traços através da cadeia trófica é capaz de apresentar riscos reais a saúde humana. Os sedimentos costeiros são considerados os maiores receptores e reservatórios de poluentes, principalmente metais pesados. Eventualmente estes contaminantes alcançam a regiões costeiras através do transporte fluvial, comumente através de associações matéria orgânica estas partículas floculam e sedimentam. Ao chegar ao fundo destes ambientes os metais encontram condições redutoras capazes de diminuir mobilidade, resultando em espécies químicas bioindisponíveis e estabilizadas. No entanto, sedimentos contaminados quando ressuspensos, por processos naturais ou antrópicos, podem sofrer alterações nas condições redox (oxidação) e pH, influenciando diretamente a mobilidade dos metais traço. Portanto, a avaliação das características dos metais traço em diferentes frações geoquímicas associadas as características físico-químicas dos sedimentos é de vital importância para compreensão destes poluentes no ambiente costeiro. Para a avaliação dos metais traço foram coletadas 18 amostras de sedimentos superficiais da Baía de Sepetiba. A avaliação do fracionamento geoquímico foi realizado através de extração sequencial (BCR-701), e para a determinação da extensão da contaminação foram aplicados os índices Igeo e Fator de Enriquecimento, enquanto para determinação de risco a biota os índices RAC e Risky Pollution Index. O experimento de resuspensão foi utilizado para determinar a magnitude da liberação dos metais Cd, Ni, Cr, Fe, Al, Pb e Zn, a concentração dos metais foi realizada através de ICP-OES no sedimento e na água por ICP-MS. A partir da caracterização dos sedimentos e da avaliação do comportamento dos metais através do experimento de resuspensão foi desenvolvido um modelo para previsão da concentração de metais na coluna d’água após eventos de resuspensão. O Cd e Zn com apresentaram aproximadamente 50% de suas concentrações associadas a fração trocável, com relevante enriquecimento e risco a biota. O experimento de resuspensão demonstrou a efetividade das alterações no potencial de oxi-redução da solução para a liberação de metais, principalmente para Cd, Pb e Zn. Durante a mudança de um ambiente redutor para oxidante, foi possível observar tanto a liberação de metais das diferentes frações geoquímicas para coluna d’água, quanto a rearranjo dos metais entre os compartimentos geoquímicos. O modelo geoquímico para previsão de metais mostrou-se uma relevante ferramenta para o planejamento de atividades de dragagem.126 f.Wasserman, Julio Cesar de Faria Alvimhttp://lattes.cnpq.br/4365891367994000Machado, Wilson Thadeu Vallehttp://lattes.cnpq.br/9250125302396616Rezende, Carlos Eduardo dehttp://lattes.cnpq.br/5893145382848301Bidone, Edison Dausackerhttp://lattes.cnpq.br/4939043777843624Ramos, Rut Amelia Díazhttp://lattes.cnpq.br/6451370564174519Rodrigues, Ana Paula de Castrohttp://lattes.cnpq.br/3842494688644394Godoy, José Marcus de Oliveirahttp://lattes.cnpq.br/2592534383776059http://lattes.cnpq.br/9452373240772108Vicente, Murilo de Carvalho2023-07-12T19:18:08Z2023-07-12T19:18:08Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfVICENTE, Murilo de Carvalho. Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments. 2022. 126 f. Tese (Doutorado em Geoquímica - Geoquímica Ambiental) - Universidade Federal Fluminense, 2022.http://app.uff.br/riuff/handle/1/29347CC-BY-SAinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da Universidade Federal Fluminense (RIUFF)instname:Universidade Federal Fluminense (UFF)instacron:UFF2023-07-12T19:18:11Zoai:app.uff.br:1/29347Repositório InstitucionalPUBhttps://app.uff.br/oai/requestriuff@id.uff.bropendoar:21202023-07-12T19:18:11Repositório Institucional da Universidade Federal Fluminense (RIUFF) - Universidade Federal Fluminense (UFF)false |
dc.title.none.fl_str_mv |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
title |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
spellingShingle |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments Vicente, Murilo de Carvalho Trace metals Bioavailability Sepetiba Bay Metal traço Sedimento Análise de sedimentos Baía de Sepetiba (RJ) Poluente ambiental Dragagem Ambiente costeiro Metais traço Biodisponibilidade Baía de Sepetiba Ambiente costeiro |
title_short |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
title_full |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
title_fullStr |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
title_full_unstemmed |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
title_sort |
Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments |
author |
Vicente, Murilo de Carvalho |
author_facet |
Vicente, Murilo de Carvalho |
author_role |
author |
dc.contributor.none.fl_str_mv |
Wasserman, Julio Cesar de Faria Alvim http://lattes.cnpq.br/4365891367994000 Machado, Wilson Thadeu Valle http://lattes.cnpq.br/9250125302396616 Rezende, Carlos Eduardo de http://lattes.cnpq.br/5893145382848301 Bidone, Edison Dausacker http://lattes.cnpq.br/4939043777843624 Ramos, Rut Amelia Díaz http://lattes.cnpq.br/6451370564174519 Rodrigues, Ana Paula de Castro http://lattes.cnpq.br/3842494688644394 Godoy, José Marcus de Oliveira http://lattes.cnpq.br/2592534383776059 http://lattes.cnpq.br/9452373240772108 |
dc.contributor.author.fl_str_mv |
Vicente, Murilo de Carvalho |
dc.subject.por.fl_str_mv |
Trace metals Bioavailability Sepetiba Bay Metal traço Sedimento Análise de sedimentos Baía de Sepetiba (RJ) Poluente ambiental Dragagem Ambiente costeiro Metais traço Biodisponibilidade Baía de Sepetiba Ambiente costeiro |
topic |
Trace metals Bioavailability Sepetiba Bay Metal traço Sedimento Análise de sedimentos Baía de Sepetiba (RJ) Poluente ambiental Dragagem Ambiente costeiro Metais traço Biodisponibilidade Baía de Sepetiba Ambiente costeiro |
description |
The accumulation of metals can reach degrees capable of representing a coastal environment's risk. However, the bioaccumulation of trace metals through the trophic chain represents also a risk real for human health. The coastal sediments are considered the main receptor and reservoir of pollutants, mostly trace metals. Eventually, these metals reach the coastal region by fluvial transport, commonly associated with organic matter the particles flocculate and settle. In the coastal sea bottom, the trace metals frequently face reducible conditions in sediments capable to decrease mobility, resulting in biounavailable and stabilized chemical species. However, the polluted sediment resuspension by natural or anthropogenic events could result in potential redox and pH changes, influencing directly on the trace metals mobility. Therefore, the trace metals characteristic in different geochemical fractions assessment associated with the sediment physicochemical conditions is crucial to the full comprehension of these pollutants in the coastal environment. For the trace metals assessment in surface sediments of Sepetiba Bay were collected 18 samples. The geochemical fractionation assessment was performed through the BCR-701 sequential extraction, for the determination of pollution extension were applied the Geoaccumulation Index (Igeo), and the Enrichment Factor, and for assessment of pollution risks for the biota were applied the Risk Assessment Code (RAC) and the Risky Pollution Index. A resuspension experiment was used to quantify the amount of metals (Cd, Ni, Cr, Fe, Al, Pb, and Zn), the concentration of the metals were determined in the sediment by ICP-OES and in the water by ICP-MS. A model to predict the concentration of trace metals in the water column after a resuspension event was developed through the geochemical fraction assessment associated with the resuspension experiment results. The Cd and Zn presented approximately 50% of the total in concentration in the exchangeable phase, with relevant enrichment and risk to the biota. The resuspension experiment demonstrated the effectiveness of the potential redox manipulation to metals release, especially for Cd, Pb, and Zn. During the process of changing the reducible to oxidant condition was possible to observe the metals release to solution and reassemble into the different geochemical compartments. The geochemical model for trace metals prediction in the water column presented a relevant tool for planning and/management of activities involving polluted sediments. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-12T19:18:08Z 2023-07-12T19:18:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
VICENTE, Murilo de Carvalho. Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments. 2022. 126 f. Tese (Doutorado em Geoquímica - Geoquímica Ambiental) - Universidade Federal Fluminense, 2022. http://app.uff.br/riuff/handle/1/29347 |
identifier_str_mv |
VICENTE, Murilo de Carvalho. Metals mobility and bioavailability assessment in the water column caused by dredging operations of polluted sediments. 2022. 126 f. Tese (Doutorado em Geoquímica - Geoquímica Ambiental) - Universidade Federal Fluminense, 2022. |
url |
http://app.uff.br/riuff/handle/1/29347 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
CC-BY-SA info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
CC-BY-SA |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da Universidade Federal Fluminense (RIUFF) instname:Universidade Federal Fluminense (UFF) instacron:UFF |
instname_str |
Universidade Federal Fluminense (UFF) |
instacron_str |
UFF |
institution |
UFF |
reponame_str |
Repositório Institucional da Universidade Federal Fluminense (RIUFF) |
collection |
Repositório Institucional da Universidade Federal Fluminense (RIUFF) |
repository.name.fl_str_mv |
Repositório Institucional da Universidade Federal Fluminense (RIUFF) - Universidade Federal Fluminense (UFF) |
repository.mail.fl_str_mv |
riuff@id.uff.br |
_version_ |
1807838810847838208 |