Production and characterization of 60Fe standards for accelerator mass spectrometry.
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2019
2019
Historique:
received:
11
03
2019
accepted:
16
06
2019
entrez:
29
6
2019
pubmed:
30
6
2019
medline:
23
2
2020
Statut:
epublish
Résumé
Accelerator Mass Spectrometry (AMS) is one of the most sensitive analysis techniques to measure long-lived radionuclides, reaching detection limits for isotopic ratios down to 10-15-10-16 in special cases. Its application portfolio covers nearly every field of environmental research, considering processes in the atmosphere, biosphere, hydrosphere, cryosphere, lithosphere and the cosmosphere. Normally, AMS measures the content of isotopes in comparison to a validated standard. However, in some cases like for example 60Fe, well characterized standard materials are difficult to produce due to the extreme rareness of the isotope. We report here on the manufacturing of a set of 60Fe standards, obtained by processing irradiated copper from a beam dump of the high-power proton accelerator (HIPA) at the Paul Scherrer Institute (PSI). The isotopic ratios of the standards have been adjusted via a dilution series of a master solution, isotopic content of which has been characterized by Multi Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS). In total, we produced three samples with isotopic ratios of 1.037(6)·10-8, 1.125(7)·10-10 and 1.234 (7)·10-12, respectively. The latter had already been applied in three pioneering AMS studies investigating the remaining signal of injected matter of nearby super novae explosions in sediment archives.
Identifiants
pubmed: 31251777
doi: 10.1371/journal.pone.0219039
pii: PONE-D-19-06684
pmc: PMC6599215
doi:
Substances chimiques
Radioisotopes
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0219039Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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