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

Mirela Vasile; Hilde Loots; Laura Vercammen; Michel Bruggeman; Freddy Verrezen

doi:10.1007/s10967-022-08405-y

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

Mirela Vasile, Hilde Loots, Laura Vercammen, Michel Bruggeman, Freddy Verrezen

Research output › peer-review

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.

Original language	English
Pages (from-to)	3349-3357
Number of pages	9
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	331
DOIs	https://doi.org/10.1007/s10967-022-08405-y
State	Published - 11 Jul 2022

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Cite this

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title = "A study for the selection of NPE-free cocktails for LSC routine measurements",

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{\textquoteright}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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AU - Vasile, Mirela

AU - Loots, Hilde

AU - Vercammen, Laura

AU - Bruggeman, Michel

AU - Verrezen, Freddy

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AB - 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.

KW - Liquid scintillation cocktail

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