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A new chemical separation procedure for the determination of rare earth elements and yttrium abundances in carbonates by ICP-MS

Abstract : The determination of rare earth elements (REEs) and Y in carbonates can be complicated by low REE abundances and the presence of significant amounts of Ba resulting in problematic interferences when analysed by ICP-MS. We describe here a novel ion-exchange method using the DGA resin (TODGA), combined with addition of a Tm spike, which allows the separation of the REEs+Y as a whole prior to analysis using an Element XR ICP-MS. This method was validated with results obtained on three different reference carbonate materials (CAL-S, JLs-1 and BEAN, an in-house standard), yielding reproducibility levels better than 3% (RSD) in most cases. This new separation scheme is particularly well suited for carbonate samples having very low REE contents, but could be equally applied to various rock types and organic-rich sample matrices whenever quantitative Ba removal is required.
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https://hal.univ-brest.fr/hal-02975503
Contributor : Lisa Malguy <>
Submitted on : Thursday, October 22, 2020 - 5:18:20 PM
Last modification on : Wednesday, November 11, 2020 - 3:01:52 AM

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Jean-Alix Barrat, Germain Bayon, Xudong Wang, Samuel Le Goff, Marie-Laure Rouget, et al.. A new chemical separation procedure for the determination of rare earth elements and yttrium abundances in carbonates by ICP-MS. Talanta, Elsevier, 2020, 219, pp.121244. ⟨10.1016/j.talanta.2020.121244⟩. ⟨hal-02975503⟩

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