A sensitive method based on HDEHP extraction and LSS for the determination of 90Sr in solid samples |
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| Authors: | A Laissaoui S Mulsow M Benmansour JJ La Rosa M IbnMajah |
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| Institution: | (1) Centre National de l"Energie des Sciences et des Techniques Nucléaires, 65, Rue Tansift, Agdal Rabat, Morocco;(2) Marine Environmental Laboratory, International Atomic Energy Agency, MC-98012, Monaco |
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| Abstract: | An improved and rapid method is described for the determination of 90Sr in environmental samples, through the separation of the daughter 90Y at equilibrium. The procedure is based on the HDEHP solvent extraction in combination with liquid scintillation spectrometry (LSS). A low background QuantulusÔ has been optimized for low level counting of Cerenkov radiation emitted by the hard b-emitter 90Y. The counting efficiency was 60% and the background 0.53 cpm. The reliability and reproducibility of the method have been checked using IAEA reference materials. The chemical recovery for 90Y extraction ranges from 83 to 90%. |
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