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, Ilka C; Kreissig, Katharina; Kamber, Balz S; Meisel, Thomas; Nägler, Thomas F; Kramers, Jan D (2002). 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. Analytical chemistry, 74(1), pp. 67-73. American Chemical Society 10.1021/ac010705z

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences

UniBE Contributor:

Nägler, Thomas and Kramers, Jan Dirk

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

0003-2700

Publisher:

American Chemical Society

Language:

English

Submitter:

Manuela Bamert

Date Deposited:

01 Sep 2016 11:54

Last Modified:

01 Mar 2017 09:35

Publisher DOI:

10.1021/ac010705z

PubMed ID:

11795820

BORIS DOI:

10.7892/boris.87707

URI:

https://boris.unibe.ch/id/eprint/87707

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