Separation of actinium-227 and its daughter radium-223 from phosphogypsum

A new method for separation and purification of 227 Ac and 223 Ra from phosphogypsum was developed. 227 Ac was leached from phosphogypsum using nitric acid solution (3 mol L −1 ), and purified using Dowex 1 × 8 and Dowex 50wx8 ion exchangers. The maximum separation recovery was about 86%. 223 Ra was...

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