Separation of titanium from silicates for isotopic ratio determination using multiple collector ICP-MS

Akio Makishima, Xiang Kun Zhu, Nick S. Belshaw, R. Keith O'Nions

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

A new separation method of Ti from silicate materials is presented that is suitable for the determination of natural Ti isotope variations using multi-collector inductively coupled plasma source mass spectrometry (MC-ICP-MS). This method makes possible for the first time the separation of Ti from natural materials, with high purity, high recovery and no introduction of artificial mass fractionation. Following sample decomposition using HF, Ti is separated using a three-column procedure. In the first column using an anion-exchange resin, AG 1X8, major elements and the majority of trace elements are separated. In the second column, after eliminating F- by evaporation with HClO4 and re-dissolution with H2O2-HNO3, Ti is separated from Zr and Hf using a liquid-liquid extraction resin, U/TEVA. In the third column, which is the same as the first column, trace amounts of Al and P are further removed. Recovery yields were almost unity, and no Ti isotope fractionation occurred from the overall chemical processing. The reproducibilities (2σ) of the Ti isotope ratio measurement for a meteorite (eucrite) and a lamproite were 47Ti, ε48Ti and ε49Ti, and 50Ti, which were comparable to those for the pure Ti standard solution.

Original languageEnglish
Pages (from-to)1290-1294
Number of pages5
JournalJournal of Analytical Atomic Spectrometry
Volume17
Issue number10
DOIs
Publication statusPublished - 2002
Externally publishedYes

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Isotopes
Fractionation
Anion Exchange Resins
Meteorites
Recovery
Silicates
Plasma sources
Distillation columns
Trace Elements
Liquids
Inductively coupled plasma
Mass spectrometry
Dissolution
Evaporation
Resins
Decomposition
Processing
titanium silicide

ASJC Scopus subject areas

  • Spectroscopy

Cite this

Separation of titanium from silicates for isotopic ratio determination using multiple collector ICP-MS. / Makishima, Akio; Zhu, Xiang Kun; Belshaw, Nick S.; O'Nions, R. Keith.

In: Journal of Analytical Atomic Spectrometry, Vol. 17, No. 10, 2002, p. 1290-1294.

Research output: Contribution to journalArticle

Makishima, Akio ; Zhu, Xiang Kun ; Belshaw, Nick S. ; O'Nions, R. Keith. / Separation of titanium from silicates for isotopic ratio determination using multiple collector ICP-MS. In: Journal of Analytical Atomic Spectrometry. 2002 ; Vol. 17, No. 10. pp. 1290-1294.
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