Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions

A layer of phosphogypsum was placed at the bottom of two large volume boxes. This system allowed to measure the surface radon exhalation from phosphogypsum without altering the emitting material. The limits and optimal setup of the closed-circuit accumulation chamber technique were thoroughly studie...

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Autores: Gutiérrez Álvarez, Isidoro, Martín Domínguez, José Enrique, Adame, José Antonio, Grossi, Claudia|||0000-0001-6678-4440, Vargas Drechsler, Arturo|||0000-0002-2576-9671, Bolívar Raya, Juan Pedro
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/329484
Acceso en línea:https://hdl.handle.net/2117/329484
https://dx.doi.org/10.1016/j.radmeas.2020.106284
Access Level:acceso abierto
Palabra clave:Radon
Chemical laboratories
Radon exhalation
Phosphogypsum
Linearity time
Radó
Laboratoris químics
Àrees temàtiques de la UPC::Enginyeria química
Àrees temàtiques de la UPC::Enginyeria química::Química física
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oai_identifier_str oai:upcommons.upc.edu:2117/329484
network_acronym_str ES
network_name_str España
repository_id_str
spelling Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditionsGutiérrez Álvarez, IsidoroMartín Domínguez, José EnriqueAdame, José AntonioGrossi, Claudia|||0000-0001-6678-4440Vargas Drechsler, Arturo|||0000-0002-2576-9671Bolívar Raya, Juan PedroRadonChemical laboratoriesRadonRadon exhalationPhosphogypsumLinearity timeRadóLaboratoris químicsÀrees temàtiques de la UPC::Enginyeria químicaÀrees temàtiques de la UPC::Enginyeria química::Química físicaA layer of phosphogypsum was placed at the bottom of two large volume boxes. This system allowed to measure the surface radon exhalation from phosphogypsum without altering the emitting material. The limits and optimal setup of the closed-circuit accumulation chamber technique were thoroughly studied. More precisely, the performance of different radon exhalation fitting methods was analyzed in the reference exhalation boxes, employing different measurement devices and three smaller operational accumulation chambers. As expected, the best approach to obtain the radon exhalation rate depends upon the effective decay constant of the measurement system and the time employed to perform the measurement. The time until the linear approximation can no longer be applied was scrutinized. Although this approximation is usually applied routinely in the literature, the effective time constant of the chamber is often not low enough for the linear fit to be applied safely, providing statistically acceptable measurements that can lead to significative underestimations of the radon exhalation rate.20202020-04-0120202020-09-30journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/329484https://dx.doi.org/10.1016/j.radmeas.2020.106284reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3294842026-05-27T15:37:01Z
dc.title.none.fl_str_mv Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
title Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
spellingShingle Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
Gutiérrez Álvarez, Isidoro
Radon
Chemical laboratories
Radon
Radon exhalation
Phosphogypsum
Linearity time
Radó
Laboratoris químics
Àrees temàtiques de la UPC::Enginyeria química
Àrees temàtiques de la UPC::Enginyeria química::Química física
title_short Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
title_full Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
title_fullStr Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
title_full_unstemmed Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
title_sort Applicability of the closed-circuit accumulation chamber technique to measure radon surface exhalation rate under laboratory conditions
dc.creator.none.fl_str_mv Gutiérrez Álvarez, Isidoro
Martín Domínguez, José Enrique
Adame, José Antonio
Grossi, Claudia|||0000-0001-6678-4440
Vargas Drechsler, Arturo|||0000-0002-2576-9671
Bolívar Raya, Juan Pedro
author Gutiérrez Álvarez, Isidoro
author_facet Gutiérrez Álvarez, Isidoro
Martín Domínguez, José Enrique
Adame, José Antonio
Grossi, Claudia|||0000-0001-6678-4440
Vargas Drechsler, Arturo|||0000-0002-2576-9671
Bolívar Raya, Juan Pedro
author_role author
author2 Martín Domínguez, José Enrique
Adame, José Antonio
Grossi, Claudia|||0000-0001-6678-4440
Vargas Drechsler, Arturo|||0000-0002-2576-9671
Bolívar Raya, Juan Pedro
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Radon
Chemical laboratories
Radon
Radon exhalation
Phosphogypsum
Linearity time
Radó
Laboratoris químics
Àrees temàtiques de la UPC::Enginyeria química
Àrees temàtiques de la UPC::Enginyeria química::Química física
topic Radon
Chemical laboratories
Radon
Radon exhalation
Phosphogypsum
Linearity time
Radó
Laboratoris químics
Àrees temàtiques de la UPC::Enginyeria química
Àrees temàtiques de la UPC::Enginyeria química::Química física
description A layer of phosphogypsum was placed at the bottom of two large volume boxes. This system allowed to measure the surface radon exhalation from phosphogypsum without altering the emitting material. The limits and optimal setup of the closed-circuit accumulation chamber technique were thoroughly studied. More precisely, the performance of different radon exhalation fitting methods was analyzed in the reference exhalation boxes, employing different measurement devices and three smaller operational accumulation chambers. As expected, the best approach to obtain the radon exhalation rate depends upon the effective decay constant of the measurement system and the time employed to perform the measurement. The time until the linear approximation can no longer be applied was scrutinized. Although this approximation is usually applied routinely in the literature, the effective time constant of the chamber is often not low enough for the linear fit to be applied safely, providing statistically acceptable measurements that can lead to significative underestimations of the radon exhalation rate.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-04-01
2020
2020-09-30
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/329484
https://dx.doi.org/10.1016/j.radmeas.2020.106284
url https://hdl.handle.net/2117/329484
https://dx.doi.org/10.1016/j.radmeas.2020.106284
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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