Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/1822/66173 |
Resumo: | Geologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (K-40 and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated financial and time constraints, and it is also difficult to perform on materials already applied in existing structures. In this work, portable gamma spectrometry results are compared with laboratory analyses in terms of radioisotopes estimations, and the activity concentration index is calculated from them (which assess the conjoint contribution of the different radioisotopes to the external gamma radiation). The studied objects are rocks and their "in situ" weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation. |
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Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methodsCiências Naturais::Ciências da Terra e do AmbienteScience & TechnologyGeologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (K-40 and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated financial and time constraints, and it is also difficult to perform on materials already applied in existing structures. In this work, portable gamma spectrometry results are compared with laboratory analyses in terms of radioisotopes estimations, and the activity concentration index is calculated from them (which assess the conjoint contribution of the different radioisotopes to the external gamma radiation). The studied objects are rocks and their "in situ" weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation.The Lab2PT-Landscapes, Heritage and Territory laboratory-AUR/04509 is supported by the Portuguese "Fundacao para a Ciencia e a Tecnologia" (Portuguese funds and where applicable the FEDER co-financing, in the aim of the new partnership agreement PT2020 and COMPETE2020-POCI 01 0145 FEDER 007528). The University Institute of Geology of the University of A Coruna (Spain) received support from Xunta de Galicia with funds from "Consolidacion y estructuracion de unidades de investigacion competitivas-Grupo de potencial de crecimiento" (GPC2015/024). The authors would like to thank A. Pinto, F. Dias, M. Cunha, and P. Pereira for help during the field work.Hindawi LimitedUniversidade do MinhoCouto, M.Sanjurjo-Sánchez, J.Alves, C.2018-052018-05-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/66173eng1687-84341687-844210.1155/2018/5706404https://www.hindawi.com/journals/amse/2018/5706404/info: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:RCAAP2023-07-21T12:11:39Zoai:repositorium.sdum.uminho.pt:1822/66173Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:03:28.117968Repositório 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 |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
title |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
spellingShingle |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods Couto, M. Ciências Naturais::Ciências da Terra e do Ambiente Science & Technology |
title_short |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
title_full |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
title_fullStr |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
title_full_unstemmed |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
title_sort |
Advances in materials science and engineering assessment of gamma radiation hazards related to geologic materials: comparison of results by field gamma spectrometry and laboratory methods |
author |
Couto, M. |
author_facet |
Couto, M. Sanjurjo-Sánchez, J. Alves, C. |
author_role |
author |
author2 |
Sanjurjo-Sánchez, J. Alves, C. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Couto, M. Sanjurjo-Sánchez, J. Alves, C. |
dc.subject.por.fl_str_mv |
Ciências Naturais::Ciências da Terra e do Ambiente Science & Technology |
topic |
Ciências Naturais::Ciências da Terra e do Ambiente Science & Technology |
description |
Geologic materials are a potential source of external gamma radiation in buildings due to the presence of radioisotopes (K-40 and isotopes from U and Th decay families). The contents of these radioisotopes can be evaluated by laboratory analyses that require the extraction of samples, with associated financial and time constraints, and it is also difficult to perform on materials already applied in existing structures. In this work, portable gamma spectrometry results are compared with laboratory analyses in terms of radioisotopes estimations, and the activity concentration index is calculated from them (which assess the conjoint contribution of the different radioisotopes to the external gamma radiation). The studied objects are rocks and their "in situ" weathering products. The results obtained indicate that despite several problems posed by field measurements with portable gamma spectrometry, namely, in terms of the geometric characteristics of the objects measured, this technique has the potential to identify materials with different hazard levels related to external gamma radiation. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05 2018-05-01T00:00:00Z |
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/1822/66173 |
url |
http://hdl.handle.net/1822/66173 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1687-8434 1687-8442 10.1155/2018/5706404 https://www.hindawi.com/journals/amse/2018/5706404/ |
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.publisher.none.fl_str_mv |
Hindawi Limited |
publisher.none.fl_str_mv |
Hindawi Limited |
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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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1799132440569053184 |