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Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea

[Image: see text] Plutonium distribution was studied in an undisturbed sediment core sampled from the Tvären bay in the vicinity of the Studsvik nuclear facility in Sweden. The complete analysis, including minor isotopes, of the Pu isotope composition ((238)Pu, (239)Pu, (240)Pu, (241)Pu, (242)Pu, an...

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Autores principales: López-Lora, Mercedes, Olszewski, Grzegorz, Chamizo, Elena, Törnquist, Per, Pettersson, Håkan, Eriksson, Mats
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9910043/
https://www.ncbi.nlm.nih.gov/pubmed/36690010
http://dx.doi.org/10.1021/acs.est.2c07437
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author López-Lora, Mercedes
Olszewski, Grzegorz
Chamizo, Elena
Törnquist, Per
Pettersson, Håkan
Eriksson, Mats
author_facet López-Lora, Mercedes
Olszewski, Grzegorz
Chamizo, Elena
Törnquist, Per
Pettersson, Håkan
Eriksson, Mats
author_sort López-Lora, Mercedes
collection PubMed
description [Image: see text] Plutonium distribution was studied in an undisturbed sediment core sampled from the Tvären bay in the vicinity of the Studsvik nuclear facility in Sweden. The complete analysis, including minor isotopes, of the Pu isotope composition ((238)Pu, (239)Pu, (240)Pu, (241)Pu, (242)Pu, and (244)Pu) allowed us to establish the Pu origin in this area of the Baltic Sea and to reconstruct the Studsvik aquatic release history. The results show highly enriched (239)Pu, probably originating from the Swedish nuclear program in the 1960s and 1970s and the handling of high burn-up nuclear fuel in the later years. In addition, the (244)Pu/(239)Pu atomic ratio for the global fallout period between 1958 and 1965 is suggested to be (7.94 ± 0.31)·10(–5). In the bottom layer of the sediment, dated 1953–1957, we detected a higher average (244)Pu/(239)Pu ratio of (1.51 ± 0.11)·10(–4), indicating the possible impact of the first US thermonuclear tests (1952–1958).
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spelling pubmed-99100432023-02-10 Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea López-Lora, Mercedes Olszewski, Grzegorz Chamizo, Elena Törnquist, Per Pettersson, Håkan Eriksson, Mats Environ Sci Technol [Image: see text] Plutonium distribution was studied in an undisturbed sediment core sampled from the Tvären bay in the vicinity of the Studsvik nuclear facility in Sweden. The complete analysis, including minor isotopes, of the Pu isotope composition ((238)Pu, (239)Pu, (240)Pu, (241)Pu, (242)Pu, and (244)Pu) allowed us to establish the Pu origin in this area of the Baltic Sea and to reconstruct the Studsvik aquatic release history. The results show highly enriched (239)Pu, probably originating from the Swedish nuclear program in the 1960s and 1970s and the handling of high burn-up nuclear fuel in the later years. In addition, the (244)Pu/(239)Pu atomic ratio for the global fallout period between 1958 and 1965 is suggested to be (7.94 ± 0.31)·10(–5). In the bottom layer of the sediment, dated 1953–1957, we detected a higher average (244)Pu/(239)Pu ratio of (1.51 ± 0.11)·10(–4), indicating the possible impact of the first US thermonuclear tests (1952–1958). American Chemical Society 2023-01-23 /pmc/articles/PMC9910043/ /pubmed/36690010 http://dx.doi.org/10.1021/acs.est.2c07437 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle López-Lora, Mercedes
Olszewski, Grzegorz
Chamizo, Elena
Törnquist, Per
Pettersson, Håkan
Eriksson, Mats
Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title_full Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title_fullStr Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title_full_unstemmed Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title_short Plutonium Signatures in a Dated Sediment Core as a Tool to Reveal Nuclear Sources in the Baltic Sea
title_sort plutonium signatures in a dated sediment core as a tool to reveal nuclear sources in the baltic sea
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9910043/
https://www.ncbi.nlm.nih.gov/pubmed/36690010
http://dx.doi.org/10.1021/acs.est.2c07437
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