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

Autor:	Mohamad Hassan, Jamal Al Abdullah, Yusr Amin, Amer Nashawati, Mohamad Anas Al-Howary, Mohammad Said Al-Masri, Waffa Al-Masri, Yasser Al-Khateeb
Rok vydání:	2020
Předmět:	Health Toxicology and Mutagenesis Radiochemistry Public Health Environmental and Occupational Health chemistry.chemical_element Phosphogypsum Pollution Analytical Chemistry chemistry.chemical_compound Actinium Nuclear Energy and Engineering chemistry Nitric acid Activity concentration Radiology Nuclear Medicine and imaging Leaching (metallurgy) Spectroscopy
Zdroj:	Journal of Radioanalytical and Nuclear Chemistry. 325:463-470
ISSN:	1588-2780 0236-5731
DOI:	10.1007/s10967-020-07251-0
Popis:	A new method for separation and purification of 227Ac and 223Ra from phosphogypsum was developed. 227Ac 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%. 223Ra was separated from the purified 227Th/227Ac solution using UTEVA resin, while RE resin was used to separate 227Ac from the mixture. The method can be used in the preparation of a source with an activity concentration of 10 kBq of 227Ac, by leaching one ton of phosphogypsum containing 11 Bq kg−1 of 227Ac.
Databáze:	OpenAIRE
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