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Determination of 228Ra in human bone ash containing significant quantities of 40K and Ca2+

Kandlbinder, Robert ; Schupfner, Robert ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 18 Mar 2011 06:57


Abstract

The determination of 228Ra by means of γ-spectrometry, in material containing significant quantities of 40K and Ca2+ such as bone ash results in increased values of counting uncertainty and lower limit of detection (LLD) because of a significant contribution from the Compton continuum of 40K. However, 40K is widely removed from bone ash if 228Ra is coprecipitated with barium sulfate. As a result, ...

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