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Issue 23, 2017
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A new method for the separation of LREEs in geological materials using a single TODGA resin column and its application to the determination of Nd isotope compositions by MC-ICPMS

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Abstract

A new method was developed for the purification of Nd in geological samples using a single column containing TODGA extraction resin and the precise determination of Nd isotope ratios by multicollector inductively coupled plasma-mass spectrometry (MC-ICPMS). The samples were digested with HF–HNO3 and then transferred to a solution of 3 M HNO3. After loading the solutions onto the TODGA resin column, the column was first eluted with 12 ml of 2.3 M HCl, followed by 8 ml of 1.2 M HCl. The Nd isotope ratios of the latter eluate were measured by MC-ICPMS. This separation procedure was validated by measuring the 143Nd/144Nd ratios (mean ± 2σ) of certified reference materials, BHVO-2, BCR-2 and AGV-2, which were determined to be 0.512989 ± 0.000012, 0.512635 ± 0.000012 and 0.512790 ± 0.000018, respectively, in good agreement with the certified and literature values.

Graphical abstract: A new method for the separation of LREEs in geological materials using a single TODGA resin column and its application to the determination of Nd isotope compositions by MC-ICPMS

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Publication details

The article was received on 12 Apr 2017, accepted on 12 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7AY00966F
Citation: Anal. Methods, 2017,9, 3531-3540
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    A new method for the separation of LREEs in geological materials using a single TODGA resin column and its application to the determination of Nd isotope compositions by MC-ICPMS

    Y. Wang, X. Huang, Y. Sun, S. Zhao and Y. Yue, Anal. Methods, 2017, 9, 3531
    DOI: 10.1039/C7AY00966F

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