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Complete dissolution of solid matrices using automated borate fusion in support of nuclear decommissioning and production of reference materials

Braysher, Emma, Russell, B., Woods, S., García-Miranda, M., Ivanov, P., Bouchard, B. and Read, D. (2019) Complete dissolution of solid matrices using automated borate fusion in support of nuclear decommissioning and production of reference materials Journal of Radioanalytical and Nuclear Chemistry, 321 (1). pp 183-196.

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Abstract

Accurate measurement of natural and anthropogenic radionuclide concentrations is of critical importance to end users in the nuclear sector to ensure correct classification prior to storage, recycling, reprocessing or disposal. Uncertainties in the characterisation of solid matrices and materials could lead to safety, quality and financial implications. Robust sample preparation methods are vital, in particular effective sample digestion, as under-estimated chemical yield recovery results in a corresponding under-estimation of activity levels. Borate fusion has been proven to effectively digest a range of complex sample matrices in the geosciences but is not used routinely elsewhere. In this study, we describe an automated procedure for borate fusion of multiple matrices encountered in nuclear decommissioning, containing diverse radionuclides over a range of activity concentrations. The impact of digestion flux, sample mass and sample to flux ratios are described, as well as the subsequent separation and measurement techniques. The results contribute to accurate and precise measurement of radionuclides in various matrices, as well as to characterisation of reference materials, providing greater confidence in nuclear industry programmes worldwide.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Braysher, Emmae.braysher@surrey.ac.uk
Russell, B.
Woods, S.
García-Miranda, M.
Ivanov, P.
Bouchard, B.
Read, D.d.read@surrey.ac.uk
Date : July 2019
Funders : Nuclear Decommissioning Authority, European Union
DOI : 10.1007/s10967-019-06572-z
Copyright Disclaimer : This is a post-peer-review, pre-copyedit version of an article published in 'Journal of Radioanalytical and Nuclear Chemistry'. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10967-019-06572-z
Uncontrolled Keywords : Fusion; Dissolution; Radionuclide; Decommissioning; Reference material; Characterisation
Related URLs :
Depositing User : Clive Harris
Date Deposited : 31 May 2019 08:50
Last Modified : 23 Aug 2019 12:53
URI: http://epubs.surrey.ac.uk/id/eprint/851914

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