Abstract
151Sm [half-life 94.7 (6) years] is a fission and activation product that requires accurate measurement as part of nuclear decommissioning. A procedure is outlined for the measurement of 151Sm in spiked graphite samples. Digestion is performed by automated lithium borate fusion, followed by extraction chromatography separation of 151Sm from interfering lanthanide isotopes, primarily europium. Measurement is carried out using tandem inductively coupled plasma mass spectrometry (ICP-MS/MS), using the integrated collision/reaction cell as a rapid support to radiochemical separation of 151Sm from isobaric 151Eu using oxygen as a reactive gas, achieving detection limits below the out-of-scope limit for 151Sm.
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