Journal article
Combined chemical separation of Lu, Hf, Sm, Nd, and Rees from a single rock digest: precise and accurate isotope determinations of Lu-Hf and Sm-Nd using multicollector-ICPMS.
- Kleinhanns IC Gruppe Isotopengeologie, Mineralogisch-Petrographisches Institut, Universität Bern, Switzerland. ilka@mpi.unibe.ch
- Kreissig K
- Kamber BS
- Meisel T
- Nägler TF
- Kramers JD
- 2002-01-25
Published in:
- Analytical chemistry. - 2002
English
A combined procedure for separating Lu, Hf, Sm, Nd, and rare earth elements (REEs) from a single sample digest is presented. The procedure consists of the following five steps: (1) sample dissolution via sodium peroxide sintering; (2) separation of the high field strength elements from the REEs and other matrix elements by a HF-free anion-exchange column procedure; (3) purification of Hf on a cation-exchange resin; (4) separation of REEs from other matrix elements by cation exchange; (5) Lu, Sm, and Nd separation from the other REEs by reversed-phase ion chromatography. Analytical reproducibilities of Sm-Nd and Lu-Hf isotope systematics are demonstrated for standard solutions and international rock reference materials. Results show overall good reproducibilities for Sm-Nd systematics independent of the rock type analyzed. For the Lu-Hf systematics, the reproducibility of the parent/daughter ratio is much better for JB-1 (basalt) than for two analyzed felsic crustal rocks (DR-N and an Archaean granitoid). It is demonstrated that this poorer reproducibility of the Lu/Hf ratio is truly caused by sample heterogeneity; thus, results are geologically reasonable.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1021/ac010705z
- PMID 11795820
- Persistent URL
- https://sonar.ch/global/documents/114752
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