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A study for the selection of NPE-free cocktails for LSC routine measurements

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Abstract

In this paper a study for the selection of an NPE (nonylphenol ethoxylates)—free cocktail is discussed in order to be used for our routine liquid scintillation counting measurements. The NPE are added in the REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)—list of amendments to Annex XIV, as chemicals which can’t be used anymore (Commission Regulation (EU) 2017/999). Nine NPE-free cocktails were bought from different producers and investigated with respect to the homogeneity, background level and influence on counting efficiency for different radionuclides. Several sample matrices were considered for direct measurement of 3H and 14C. Based on this study we could select the best cocktail which fulfills our requirements for routine analyses.

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Acknowledgements

The authors would like to thank to the LSC laboratory colleagues and to Laura Vercammen since most of the laboratory work was performed during her internship.

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Authors and Affiliations

  1. SCK CEN, Boeretang 200, 2400, Mol, Belgium

    M. Vasile, H. Loots, L. Vercammen, M. Bruggeman & F. Verrezen

  2. Thomas Moore, Campus Geel, Kleinhoefstraat 4, 2440, Geel, Belgium

    L. Vercammen

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  1. M. Vasile
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  2. H. Loots
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  3. L. Vercammen
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  4. M. Bruggeman
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  5. F. Verrezen
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Correspondence to M. Vasile.

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Vasile, M., Loots, H., Vercammen, L. et al. A study for the selection of NPE-free cocktails for LSC routine measurements. J Radioanal Nucl Chem 331, 3349–3357 (2022). https://doi.org/10.1007/s10967-022-08405-y

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  • DOI: https://doi.org/10.1007/s10967-022-08405-y

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