Investigating Metals and Metalloids in Soil at Micrometric Scale Using µ-XRF Spectroscopy

Detalhes bibliográficos
Autor(a) principal: Barbosa, Sofia
Data de Publicação: 2023
Outros Autores: Dias, António, Pacheco, Marta, Pessanha, Sofia, Almeida, J. António
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.
id RCAP_2b4d043424639f43839a8cd973d1c71c
oai_identifier_str oai:run.unl.pt:10362/156750
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling 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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799138149799034880

Registros relacionados