Grahek Z, Milanović I, Nodilo M, Rožmarić M. Sequential separation of Fe and Sr from liquid samples by using Sr resin and rapid determination of ⁵⁵Fe and (⁸⁹,⁹⁰)Sr.
Appl Radiat Isot 2013;
81:42-8. [PMID:
23566806 DOI:
10.1016/j.apradiso.2013.03.037]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 03/08/2013] [Indexed: 11/18/2022]
Abstract
The obtained results showed that the Sr resin can be used for the chromatographic separation of Fe (III) and Sr (II) ions by using a mixture of HCl and HNO3. It was shown that the binding strength of Fe (III) decreases with increasing concentration of HNO3 while the binding strength of Sr (II) increases. It was found that the optimal bonding strength is achieved in 6 mol/L HCl:3 mol/L HNO3 and varying concentrations of acid in the mixture allow their selective separation. On basis of these results, a method for the separation of (55)Fe and (89,90)Sr from liquid samples which consists of binding of Fe and Sr on Sr resin and separation from a number of elements by 6 mol/L HCl:3 mol/L HNO3 and their mutual separation by eluting of Sr with 4 mol/L HCl is established. The method enables efficient simultaneous separation (with high recovery) of (89,90)Sr and (55)Fe and in combination with Čerenkov counting rapid determination of (89,90)Sr.
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