Separation of Ba and Pb from aqueous solutions of Sr with commercially available “precipitated active manganese dioxide” |
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Authors: | D Tait G Haase A Wiechen |
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Institution: | (1) Federal Dairy Research Centre, Hermann-Weigmann-Strasse 1, D-2300 Kiel, Germany |
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Abstract: | Ba and Pb radionuclides can be removed from Sr in aqueous solution in both sodium acetate and acetic acid, containing 20 mg Sr carrier, by stirring with small (0.1–0.5 g) amounts of solid manganese dioxide. In tracer experiments85Sr was separated with only small losses from133Ba and210Pb by separation factors of 87 and 135, respectively. The separation factor is defined here as the % of the initial85Sr activity/ % of the initial133Ba or210Pb activity remaining in the aqueous phase after MnO2 contact. The applicability of this technique for removing Ba and Pb radionuclides in the analysis of90Sr in environmental samples (especially milk) is discussed. |
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