Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/156750 |
Resumo: | This research was funded by FCT-Fundação para a Ciência e a Tecnologia, Portugal, grant number UID/FIS/04559/2020. Publisher Copyright: © 2023 by the authors. |
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Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF SpectroscopyA Case Studysoil matrixmetal distribution per grain fractionmicro-X-ray elemental mappingRGB clustering image analysisk-meansChemical Engineering (miscellaneous)Engineering (miscellaneous)This research was funded by FCT-Fundação para a Ciência e a Tecnologia, Portugal, grant number UID/FIS/04559/2020. Publisher Copyright: © 2023 by the authors.Micrometric 2D mapping of distinct elements was performed in distinct soil grain-size fractions of a sample using the micro-X-ray Fluorescence (µ-XRF) technique. The sample was collected in the vicinity of São Domingos, an old mine of massive sulphide minerals located in the Portuguese Iberian Pyrite Belt. As expected, elemental high-grade concentrations of distinct metals and metalloids in the dependence of the existent natural geochemical anomaly were detected. Clustering and k-means statistical analysis were developed considering Red–Green–Blue (RGB) pixel proportions in the produced 2D micrometric image maps, allowing for the identification of elemental spatial distributions at 2D. The results evidence how elemental composition varies significantly at the micrometric scale per grain-size class, and how chemical elements present irregular spatial distributions in the direct dependence of distinct mineral spatial distributions. Due to this fact, elemental composition is more differentiated in coarser grain-size classes, whereas griding-milled fraction does not always represent the average of all partial grain-size fractions. Despite the complexity of the performed analysis, the achieved results evidence the suitability of µ-XRF to characterize natural, heterogeneous, granular soils samples at the micrometric scale, being a very promising investigation technique of high resolution.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasDCT - Departamento de Ciências da TerraDF – Departamento de FísicaLIBPhys-UNLRUNBarbosa, SofiaDias, AntónioPacheco, MartaPessanha, SofiaAlmeida, J. António2023-08-21T22:18:06Z2023-01-022023-01-02T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://hdl.handle.net/10362/156750engPURE: 68609298https://doi.org/10.3390/eng4010008info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-18T01:43:20Zoai:run.unl.pt:10362/156750Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:56:27.082908Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy A Case Study |
title |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
spellingShingle |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy Barbosa, Sofia soil matrix metal distribution per grain fraction micro-X-ray elemental mapping RGB clustering image analysis k-means Chemical Engineering (miscellaneous) Engineering (miscellaneous) |
title_short |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
title_full |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
title_fullStr |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
title_full_unstemmed |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
title_sort |
Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy |
author |
Barbosa, Sofia |
author_facet |
Barbosa, Sofia Dias, António Pacheco, Marta Pessanha, Sofia Almeida, J. António |
author_role |
author |
author2 |
Dias, António Pacheco, Marta Pessanha, Sofia Almeida, J. António |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias DCT - Departamento de Ciências da Terra DF – Departamento de Física LIBPhys-UNL RUN |
dc.contributor.author.fl_str_mv |
Barbosa, Sofia Dias, António Pacheco, Marta Pessanha, Sofia Almeida, J. António |
dc.subject.por.fl_str_mv |
soil matrix metal distribution per grain fraction micro-X-ray elemental mapping RGB clustering image analysis k-means Chemical Engineering (miscellaneous) Engineering (miscellaneous) |
topic |
soil matrix metal distribution per grain fraction micro-X-ray elemental mapping RGB clustering image analysis k-means Chemical Engineering (miscellaneous) Engineering (miscellaneous) |
description |
This research was funded by FCT-Fundação para a Ciência e a Tecnologia, Portugal, grant number UID/FIS/04559/2020. Publisher Copyright: © 2023 by the authors. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-08-21T22:18:06Z 2023-01-02 2023-01-02T00:00:00Z |
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://hdl.handle.net/10362/156750 |
url |
http://hdl.handle.net/10362/156750 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
PURE: 68609298 https://doi.org/10.3390/eng4010008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
15 application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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