Ion-Exchange Removal of Fe(III) and Mg(II) in the Analysis of Rare Earth Elements in Rocks by Inductively Coupled Plasma Mass Spectrometry

2015 ◽  
Vol 670 ◽  
pp. 258-263
Author(s):  
Lidiya N. Skvortsova ◽  
Aleksey S. Podprugin ◽  
Vladimir I. Otmakhov
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Inductively Coupled Plasma ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Cation Exchange Resin ◽  
Correction Factors ◽  
Standard Samples ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

Tiron has been proposed for the removal of Fe (III) and Mg (II) ions from the test solution by ion exchange in the REE trace analysis in rocks by ICP-MS. The conditions for Fe (III) isolation on a column with anion-exchange resin АВ-17-8,Cl– and for Mg (II) on a column with cation-exchange resin Purolite С100 have been found. The concentration of Fe (III) is reduced up to 10 times, and Mg (II) – more than 100 times. Correction factors have been used in order to eliminate the systematic error in the determination of REE due to their partial sorption on the anion-exchange resin in the form of complexes with Tiron. The correctness and accuracy of the developed sample preparation method and of the correction factors have been confirmed in the analysis of standard samples base on natural geochemical objects.

scholarly journals Isolation and radiochemical purification of samarium isotopes using ion exchange resins АВ 17×8 AND KU-2

2021 ◽  
Vol 21 (4) ◽  
pp. 368-377
Author(s):  
Sayan E. Salmenbayev ◽  
◽  
Nazgul K. Nurgaysinova ◽  
Gani M. Yessilkanov ◽  
Аray E. Temirzhanova ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Chemical Elements ◽  
Cation Exchange Resin ◽  
Internal Exposure ◽  
Ion Exchange Resins ◽  
Exchange Resins

The relevance of the research is caused by the need to develop a methodological base for determining 151Sm content in the soil cover of radioactively contaminated territories of Kazakhstan. The developed method for the determining of 151Sm will make it possible to assess the levels of soil contamination with this radionuclide, to determine the character of its spatial distribution, to allow estimating the internal exposure doses for the personnel and the population. The aim of the research is to carry out the isolation and radiochemical purification of samarium isotopes from acid solutions via using ion-exchange resins AV 17×8 and KU-2. Objects: salt solutions based on nitric and hydrochloric acid containing the stable isotopes of some natural, artificial β-emitters and isotopes of U and Th. The concentrations of nitric and hydrochloric acids were equal to the concentrations of the same acids used in the routine analysis of Pu and Am. Concentrations of chemical elements were determined using the Agilent 7700x quadrupole mass spectrometer and the iCAP 6300 Duo atomic emission spectrometer. The results of the experiments on the isolation and radiochemical purification of samarium isotopes from acidic solutions using anion-exchange resin AV 17×8 and cation-exchange resin KU-2 have been presented. It has been shown that the Sm-fraction can be purified from alkaline elements, Tl and U isotopes using the KU-2 cation-exchange resin. In turn, the isotopes U, Fe and Co can be removed using an anion exchange resin in 9M HCl media.

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