New sequential separation procedure for Sr, Nd and Pb isotope ratio measurement in geological material using MC-ICP-MS and TIMS

Akio Makishima, B. Nagender Nath, Eizo Nakamura

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    A new 3-step sequential separation chemistry for Sr, Nd and Pb from silicate samples, which is suitable for isotope analysis by MC-ICP-MS as well as TIMS, has been developed. The chemistry is designed to minimize the number of evaporation steps, enabling high throughput especially when MC-ICP-MS is employed. The sample solution in 0.5 mol 1-1 HNO3 after digestion with HF-HClO4, which is prepared for trace element analysis, can be directly used in the new chemistry. In the first column using Sr resin, Sr and Pb are collected. The recovered solution for Sr can be directly aspirated into MC-ICP-MS. The Pb solution is dried, re-dissolved, separated into two aliquots and measured by double spike MC-ICP-MS. Subsequently, LREEs are collected by the second column packed with cation exchange resin. Finally, Nd was purified from Sm using Ln resin in the third column. The recovered Nd solution can also be directly nebulized into MC-ICP-MS. The Sr and Nd isotope ratios for the standard material JB-3 (basalt) from the Geological Survey of Japan by MC-ICP-MS and TIMS were reported to verify the chemistry and mass spectrometry developed in this study.

    Original languageEnglish
    Pages (from-to)237-246
    Number of pages10
    JournalGEOCHEMICAL JOURNAL
    Volume42
    Issue number3
    DOIs
    Publication statusPublished - 2008

    Keywords

    • Isotope
    • MC-ICP-MS
    • Nd
    • Sr
    • TIMS

    ASJC Scopus subject areas

    • Geophysics
    • Geochemistry and Petrology

    Fingerprint

    Dive into the research topics of 'New sequential separation procedure for Sr, Nd and Pb isotope ratio measurement in geological material using MC-ICP-MS and TIMS'. Together they form a unique fingerprint.

    Cite this