Determination of trace rare earth elements in rock samples including meteorites by ICP-MS coupled with isotope dilution and comparison methods

Mitsuru Ebihara, Kazuki Hayano, Naoki Shirai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Combining isotope dilution mass spectrometry with a calibration method and choosing appropriate internal standard elements, 14 lanthanides (rare earth elements, REEs) were precisely and accurately determined for rock samples by using quadruple ICP-MS instruments. An enriched spike of 149Sm was used to determine Sm content by an isotope dilution method. Simultaneously, Sm content was determined by a calibration method and the ratio of the two Sm values was used for correcting the preparation loss of the other REEs, which were analyzed only by a calibration method. Indium and Tl were chosen for use as internal standard elements. Applying the procedure developed in this study to the homogenized Allende meteorite powder sample prepared by the Smithsonian Institution, Washington, D. C., US and several geological reference samples issued by the Geological Survey of Japan and the US geological Survey, precision and accuracy of the data obtained were evaluated and the accuracy was found to be equivalent to isotope dilution values obtained by thermal ionization mass spectrometry. Rare earth element concentrations in several meteorite samples were determined, and results indicate that our procedure is appropriate for a wide variety of whole rock compositions.

Original languageEnglish
Pages (from-to)81-89
Number of pages9
JournalAnalytica Chimica Acta
Volume1101
DOIs
Publication statusPublished - 2020 Mar 8
Externally publishedYes

Keywords

  • Geological reference sample
  • Inductively-coupled plasma mass spectrometry
  • Internal standard elements
  • Isotope dilution mass spectrometry
  • Meteorite
  • Rare earth elements

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Fingerprint Dive into the research topics of 'Determination of trace rare earth elements in rock samples including meteorites by ICP-MS coupled with isotope dilution and comparison methods'. Together they form a unique fingerprint.

  • Cite this