Preparation and certification of synthetic uranium isotope mixtures with 236U/238U ratios of 10–6, 10–7, 10–8

Stephan, Richter; Alonso, A.; Bolle, W. de; Heinz, Kuehn; Andre, Verbruggen; Wellum, R.; Taylor, Philip

doi:10.1039/b509726f

Cited by 15 publications

(15 citation statements)

References 7 publications

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“…A similar spread was also detected in the CCQM-P48, a pilot study organised by IRMM on behalf of the Comité Consultatif pour la Quantité de Matière (CCQM) [26]. On the other hand, measurements performed with TIMS in synthetic isotope mixtures in the ratios of 10 −4 to 10 −8 showed excellent agreement with the prepared values [27]. This shows that reliable measurements can be carried out even at these low values.…”

Section: Measurement Of Uranium Minor Isotope Amount Ratiossupporting

confidence: 73%

Demonstrating the metrological compatibility of uranium isotope amount ratio measurement results obtained by GSMS, TIMS and MC-ICPMS techniques

Junior

Bolle²,

Alonso³

et al. 2010

International Journal of Mass Spectrometry

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Section: Measurement Of Uranium Minor Isotope Amount Ratiossupporting

confidence: 73%

Demonstrating the metrological compatibility of uranium isotope amount ratio measurement results obtained by GSMS, TIMS and MC-ICPMS techniques

Junior

Bolle²,

Alonso³

et al. 2010

International Journal of Mass Spectrometry

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“…For isotope ratio measurements, systematic biases due to matrix effects are well documented in literature [2]. TIMS measurements are less susceptible to such biases and therefore have been more widely applied to certification measurements of isotopic CRMs [3][4][5][6][7][8]. Most commonly used TIMS analytical methods are total evaporation (TE), modified total evaporation (MTE), and conventional analyses.…”

Section: Introductionmentioning

confidence: 99%

Comparison of mass spectrometric methods (TE, MTE and conventional) for uranium isotope ratio measurements

Mathew

Haoszbek

2015

J Radioanal Nucl Chem

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The isotope ratio measurement techniquestotal evaporation (TE), modified total evaporation (MTE), and conventional-used for characterization measurements of certified reference materials by thermal ionization mass spectrometer instruments are compared. The advantages of each method, the fractionation profiles resulting from the measurement techniques, and factors affecting systematic components of bias in the isotope ratio measurements are discussed. The TE and MTE techniques yield major ratios and the conventional and MTE techniques yield minor ratios of comparable quality (in terms of precision and accuracy).

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“…Les TIMS atteignent des valeurs de rapport de masse 236 U/ 238 U de l'ordre de 10 -8 (Richter et al, 2005) et jusqu'à 2 × 10 -10 , sous certaines conditions (Boulyga et Heumann, 2006 (Boulyga et Heumann, 2006 ;Steier et al, 2008). C'est actuellement la seule technique de spectrométrie de masse qui permet de mesurer les rapports 236 U/ 238 U au niveau du bruit de fond naturel (Quinto et al, 2009 Bien que les concentrations en uranium varient fortement dans les roches, terme source de l'uranium présent naturellement dans la biosphère (Gascoyne, 1992), on considère les roches suffisamment anciennes (> 1 Ma) comme des systèmes « clos » c'est-à-dire que 238 U (tête de chaîne) présente une activité égale à celle de ses descendants (notamment 234 U) (Fig.…”

Section: Les Techniques De Mesure Des Isotopes De L'uraniumunclassified

Contribution des isotopes de l’uranium à l’expertise des sources de ce radioélément dans l’environnement

2011

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RÉSUMÉCette note synthétise les données récemment acquises par l'IRSN ainsi que les données disponibles dans la littérature, concernant l'utilisation des isotopes de l'uranium pour évaluer les conséquences dans l'environnement des rejets des installations du cycle du combustible nucléaire. Ainsi, les végétaux peuvent témoigner d'anomalies du rapport de masse 235 U/ 238 U par rapport à la signature de l'uranium naturel ( U activity ratio in aquatic environment, when secular equilibrium between isotopes occurs, is a tracer of the uranium releases from uranium milling or conversion.

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Preparation and certification of synthetic uranium isotope mixtures with 236U/238U ratios of 10–6, 10–7, 10–8

Cited by 15 publications

References 7 publications

Demonstrating the metrological compatibility of uranium isotope amount ratio measurement results obtained by GSMS, TIMS and MC-ICPMS techniques

Demonstrating the metrological compatibility of uranium isotope amount ratio measurement results obtained by GSMS, TIMS and MC-ICPMS techniques

Comparison of mass spectrometric methods (TE, MTE and conventional) for uranium isotope ratio measurements

Contribution des isotopes de l’uranium à l’expertise des sources de ce radioélément dans l’environnement

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