Liquid Scintillation Spectroscopy of 227Ac and Daughters


In order to find a fast and reliable method for measurements of organic and aqueous liquid phases containing a- and b-emitters in mixtures we developed a method based on Liquid Scintillation Counting (LSC) using Quantulus Low Level Spectrometer. The use of low level LSC instead of g-spectroscopy allows reduced sample activity, shorter count rates and use of sample changer. This is of great advantage when many samples have to be measured during a short time period. The main nuclides of interest were 227Ac and 223Ra. 227Ac does not have any appropriate g-radiation, therefore measurements of the nuclei of interest must be based on a- and b-spectroscopy. In this study, it is shown that analyses of the radionuclidic purity of the liquid phases could be determined by a- and b-spectroscopy with Quantulus.

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D. Ø. Eriksen, B. Ryningen, B. Schoultz, G. Salberg and R. H. Larsen, "Liquid Scintillation Spectroscopy of 227Ac and Daughters," Journal of Analytical Sciences, Methods and Instrumentation, Vol. 2 No. 1, 2012, pp. 33-36. doi: 10.4236/jasmi.2012.21007.

Conflicts of Interest

The authors declare no conflicts of interest.


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