Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores

244Pu (T1/2 = 81 My) is the longest-lived, most minor, and the most understudied Pu isotope. The anthropogenic production of 244Pu is linked to nuclear detonations. Reported 244Pu/239Pu atom ratios in environmental samples range from below 10− 6 to above 10− 3 . This work discusses the performance o...

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Autores: Chamizo, E., López Lora, Mercedes, Lerida Toro, Victoria
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/166716
Acceso en línea:https://hdl.handle.net/11441/166716
https://doi.org/10.1016/j.jenvrad.2024.107485
Access Level:acceso abierto
Palabra clave:244Pu
AMS
Pu
236U
IAEA-412
IAEA-465
IAEA-385
CNA
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oai_identifier_str oai:idus.us.es:11441/166716
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repository_id_str
spelling Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de AceleradoresChamizo, E.López Lora, MercedesLerida Toro, Victoria244PuAMSPu236UIAEA-412IAEA-465IAEA-385CNA244Pu (T1/2 = 81 My) is the longest-lived, most minor, and the most understudied Pu isotope. The anthropogenic production of 244Pu is linked to nuclear detonations. Reported 244Pu/239Pu atom ratios in environmental samples range from below 10− 6 to above 10− 3 . This work discusses the performance of the 1 MV Accelerator Mass Spectrometry system at the Centro Nacional de Aceleradores (CNA, Seville, Spain) to analyse 244Pu at envi ronmental levels. The presence of 232Th traces in the Pu sample limits the sensitivity of the technique through the formation of the diatomic trication ( 232Th12C)3+, of mass 244 u, which must be suppressed by adjusting the stripper gas pressure. A244Pu background of 0.0075 fg (2 × 104 at) is demonstrated for samples that have un dergone a chemical treatment. The reliability of the technique is proved through the analysis of three reference sediments provided by the International Atomic Energy Agency (IAEA-412, IAEA-465, IAEA-385). 244Pu results are complemented with 239Pu, 240Pu, 241Pu and 236U and their relative isotopic abundances are discussed.Ministerio de Ciencia e Innovación y Universidades (MICIN). España PID2022-140680NB-I00ElsevierFísica Atómica, Molecular y NuclearMinisterio de Ciencia, Innovación y Universidades (MICINN). España2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/166716https://doi.org/10.1016/j.jenvrad.2024.107485reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Environmental Radioactivity, 278, 107485.PID2022-140680NB-I00https://doi.org/10.1016/j.jenvrad.2024.107485info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1667162026-06-17T12:51:07Z
dc.title.none.fl_str_mv Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
title Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
spellingShingle Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
Chamizo, E.
244Pu
AMS
Pu
236U
IAEA-412
IAEA-465
IAEA-385
CNA
title_short Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
title_full Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
title_fullStr Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
title_full_unstemmed Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
title_sort Reaching environmental levels of 244Pu by accelerator mass spectrometry at the Centro Nacional de Aceleradores
dc.creator.none.fl_str_mv Chamizo, E.
López Lora, Mercedes
Lerida Toro, Victoria
author Chamizo, E.
author_facet Chamizo, E.
López Lora, Mercedes
Lerida Toro, Victoria
author_role author
author2 López Lora, Mercedes
Lerida Toro, Victoria
author2_role author
author
dc.contributor.none.fl_str_mv Física Atómica, Molecular y Nuclear
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
dc.subject.none.fl_str_mv 244Pu
AMS
Pu
236U
IAEA-412
IAEA-465
IAEA-385
CNA
topic 244Pu
AMS
Pu
236U
IAEA-412
IAEA-465
IAEA-385
CNA
description 244Pu (T1/2 = 81 My) is the longest-lived, most minor, and the most understudied Pu isotope. The anthropogenic production of 244Pu is linked to nuclear detonations. Reported 244Pu/239Pu atom ratios in environmental samples range from below 10− 6 to above 10− 3 . This work discusses the performance of the 1 MV Accelerator Mass Spectrometry system at the Centro Nacional de Aceleradores (CNA, Seville, Spain) to analyse 244Pu at envi ronmental levels. The presence of 232Th traces in the Pu sample limits the sensitivity of the technique through the formation of the diatomic trication ( 232Th12C)3+, of mass 244 u, which must be suppressed by adjusting the stripper gas pressure. A244Pu background of 0.0075 fg (2 × 104 at) is demonstrated for samples that have un dergone a chemical treatment. The reliability of the technique is proved through the analysis of three reference sediments provided by the International Atomic Energy Agency (IAEA-412, IAEA-465, IAEA-385). 244Pu results are complemented with 239Pu, 240Pu, 241Pu and 236U and their relative isotopic abundances are discussed.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/166716
https://doi.org/10.1016/j.jenvrad.2024.107485
url https://hdl.handle.net/11441/166716
https://doi.org/10.1016/j.jenvrad.2024.107485
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Environmental Radioactivity, 278, 107485.
PID2022-140680NB-I00
https://doi.org/10.1016/j.jenvrad.2024.107485
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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